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CAPE CANAVERAL, Fla. - Space shuttle Discovery's main landing gear touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida after 13-days in space, completing the 5.3-million-mile STS-133 mission. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen.            Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Linda Perry KSC-2011-2083

CAPE CANAVERAL, Fla. - Space shuttle Discovery's main landing gear tou...

CAPE CANAVERAL, Fla. - Space shuttle Discovery's main landing gear touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida after 13-days in space, completing the 5.3-... More

CAPE CANAVERAL, Fla. -- Xenon lights illuminate space shuttle Atlantis' unfurled drag chute as the vehicle rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final. Securing the space shuttle fleet's place in history, Atlantis marked the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board are STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandra Magnus and Rex Walheim.    On the 37th shuttle mission to the International Space Station, STS-135 delivered more than 9,400 pounds of spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jim Grossmann KSC-2011-5629

CAPE CANAVERAL, Fla. -- Xenon lights illuminate space shuttle Atlantis...

CAPE CANAVERAL, Fla. -- Xenon lights illuminate space shuttle Atlantis' unfurled drag chute as the vehicle rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida f... More

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, space shuttle Endeavour's "towback" vehicle slowly pulls it from the Shuttle Landing Facility to Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. A purge unit that pumps conditioned air into a shuttle after landing is connected to Endeavour's aft end. Once inside the processing facility, Endeavour will be prepared for future public display.            Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.   Endeavour and its crew delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Jack Pfaller KSC-2011-4263

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, spac...

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, space shuttle Endeavour's "towback" vehicle slowly pulls it from the Shuttle Landing Facility to Orbiter Processing Facility-1 at NASA's Kennedy... More

CAPE CANAVERAL, Fla. -- A "towback" vehicle slowly pulls shuttle Endeavour from the Shuttle Landing Facility to Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. A purge unit that pumps conditioned air into a shuttle after landing is connected to Endeavour's aft end. In the background is the massive Vehicle Assembly Building. Once inside the processing facility, Endeavour will be prepared for future public display.              Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.   Endeavour and its crew delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Jack Pfaller KSC-2011-4273

CAPE CANAVERAL, Fla. -- A "towback" vehicle slowly pulls shuttle Endea...

CAPE CANAVERAL, Fla. -- A "towback" vehicle slowly pulls shuttle Endeavour from the Shuttle Landing Facility to Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. A purge unit that pumps c... More

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori.    STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kevin O'Connell KSC-2011-4192

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour rolls to a stop on the...

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Main gear touchdown was at 2:34:51 a.m. ... More

CAPE CANAVERAL, Fla. -- Space shuttle Discovery's main landing gear touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida after 13-days in space, completing the 5.3-million-mile STS-133 mission. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen.          Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Ben Cooper KSC-2011-2085

CAPE CANAVERAL, Fla. -- Space shuttle Discovery's main landing gear to...

CAPE CANAVERAL, Fla. -- Space shuttle Discovery's main landing gear touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida after 13-days in space, completing the 5.3... More

CAPE CANAVERAL, Fla. -- It is time for reflection at NASA's Kennedy Space Center in Florida as employees accompany space shuttle Atlantis as it is slowly towed from the Shuttle Landing Facility to an orbiter processing facility. Atlantis' final return from space at 5:57 a.m. EDT concluded the STS-135 mission, secured the space shuttle fleet's place in history and brought a close to America's Space Shuttle Program. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board were STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandra Magnus and Rex Walheim.    On the 37th shuttle mission to the International Space Station, STS-135 delivered the Raffaello multi-purpose logistics module filled with more than 9,400 pounds of spare parts, equipment and supplies that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles, and also the final mission of the Space Shuttle Program.  For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5812

CAPE CANAVERAL, Fla. -- It is time for reflection at NASA's Kennedy Sp...

CAPE CANAVERAL, Fla. -- It is time for reflection at NASA's Kennedy Space Center in Florida as employees accompany space shuttle Atlantis as it is slowly towed from the Shuttle Landing Facility to an orbiter pr... More

CAPE CANAVERAL, Fla. -- Xenon lights guide space shuttle Atlantis down on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Securing the space shuttle fleet's place in history, Atlantis marked the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board are STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandra Magnus and Rex Walheim.      On the 37th shuttle mission to the International Space Station, STS-135 delivered more than 9,400 pounds of spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Frank Michaux KSC-2011-5631

CAPE CANAVERAL, Fla. -- Xenon lights guide space shuttle Atlantis down...

CAPE CANAVERAL, Fla. -- Xenon lights guide space shuttle Atlantis down on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Securing the space shuttle fleet'... More

CAPE CANAVERAL, Fla. -- Xenon lights help lead space shuttle Endeavour home to NASA's Kennedy Space Center in Florida. Endeavour landed for the final time on the Shuttle Landing Facility's Runway 15, marking the 25th night landing of NASA's Space Shuttle Program. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.             On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori. STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Tom Farrar and Tony Gray KSC-2011-4239

CAPE CANAVERAL, Fla. -- Xenon lights help lead space shuttle Endeavour...

CAPE CANAVERAL, Fla. -- Xenon lights help lead space shuttle Endeavour home to NASA's Kennedy Space Center in Florida. Endeavour landed for the final time on the Shuttle Landing Facility's Runway 15, marking th... More

CAPE CANAVERAL, Fla. -- At the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, the drag chute trailing space shuttle Atlantis slows the near-invisible shuttle for landing on Runway 15 one final time.  Securing the space shuttle fleet's place in history, Atlantis marked the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board are STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandra Magnus and Rex Walheim.    On the 37th shuttle mission to the International Space Station, STS-135 delivered the Raffaello multi-purpose logistics module filled with more than 9,400 pounds of spare parts, equipment and supplies that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. STS-135 also was the final mission of the Space Shuttle Program.  For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kenny Allen KSC-2011-5729

CAPE CANAVERAL, Fla. -- At the Shuttle Landing Facility at NASA's Kenn...

CAPE CANAVERAL, Fla. -- At the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, the drag chute trailing space shuttle Atlantis slows the near-invisible shuttle for landing on Runway 15 one fi... More

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttle Atlantis safe and secure for towing to its processing hangar begins to pull up around the spacecraft following wheelstop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida. Atlantis' final return from space at 5:57 a.m. EDT completed the 13-day, 5.2-million-mile STS-135 mission. Securing the space shuttle fleet's place in history, Atlantis safely and successfully brought a close to NASA's Space Shuttle Program.            STS-135 delivered spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5666

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttl...

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttle Atlantis safe and secure for towing to its processing hangar begins to pull up around the spacecraft following wheelstop on the Shuttle La... More

CAPE CANAVERAL, Fla. -- Veiled in darkness, space shuttle Atlantis nears touchdown for the final time on Runway 15 at NASA's Kennedy Space Center in Florida. Securing the space shuttle fleet's place in history, Atlantis marked the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board are STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandra Magnus and Rex Walheim.    On the 37th shuttle mission to the International Space Station, STS-135 delivered the Raffaello multi-purpose logistics module    filled with more than 9,400 pounds of spare parts, equipment and supplies that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. STS-135 also was the final mission of the Space Shuttle Program.  For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Chad Baumer KSC-2011-5707

CAPE CANAVERAL, Fla. -- Veiled in darkness, space shuttle Atlantis nea...

CAPE CANAVERAL, Fla. -- Veiled in darkness, space shuttle Atlantis nears touchdown for the final time on Runway 15 at NASA's Kennedy Space Center in Florida. Securing the space shuttle fleet's place in history,... More

STS131-S-144 (20 April 2010) --- At the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, members of the STS-131 crew, each holding a flag from his or her country of origin, pose for a portrait in front of space shuttle Discovery. From the right are NASA astronauts Alan Poindexter, commander; James P. Dutton Jr., pilot; Rick Mastracchio, Dorothy Metcalf-Lindenburger, Stephanie Wilson, Japanese astronaut Naoko Yamazaki and NASA astronaut Clayton Anderson, all mission specialists. Discovery landed on Runway 33 after 15 days in space, completing the more than 6.2-million-mile STS-131 mission on orbit 238. Main gear touchdown was at 9:08:35 a.m. (EDT) on April 20, 2010, followed by nose gear touchdown at 9:08:47 a.m. and wheelstop at 9:09:33 a.m. The seven-member STS-131 crew carried the Leonardo Multi-Purpose Logistics Module, filled with supplies, a new crew sleeping quarters and science racks that were transferred to the International Space Station's laboratories. The crew also switched out a gyroscope on the station?s truss, installed a spare ammonia storage tank and retrieved a Japanese experiment from the station?s exterior. STS-131 is the 33rd shuttle mission to the station and the 131st shuttle mission overall. sts131-s-144

STS131-S-144 (20 April 2010) --- At the Shuttle Landing Facility at NA...

STS131-S-144 (20 April 2010) --- At the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, members of the STS-131 crew, each holding a flag from his or her country of origin, pose for a portrai... More

CAPE CANAVERAL, Fla. - NASA managers participate in a post-landing media briefing at NASA's Kennedy Space Center in Florida following the completion of the STS-133 mission. From left are Allard Beutel, NASA Public Affairs; Bill Gerstenmaier, associate administrator for Space Operations; Mike Moses, space shuttle launch integration manager; and Mike Leinbach, shuttle launch director.    Space shuttle Discovery's final return from space on Runway 15 at Kennedy's Shuttle Landing Facility completed the 13-day, 5.3-million-mile STS-133 mission. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen.  Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Jack Pfaller KSC-2011-2109

CAPE CANAVERAL, Fla. - NASA managers participate in a post-landing med...

CAPE CANAVERAL, Fla. - NASA managers participate in a post-landing media briefing at NASA's Kennedy Space Center in Florida following the completion of the STS-133 mission. From left are Allard Beutel, NASA Pub... More

CAPE CANAVERAL, Fla. - Space shuttle Discovery, its drag chute unfurled, appears to be a mirage as it travels down Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's final return from space completed the 13-day, 5.3-million-mile STS-133 mission. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen.     Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Tony Gray and Tom Farrar KSC-2011-2103

CAPE CANAVERAL, Fla. - Space shuttle Discovery, its drag chute unfurle...

CAPE CANAVERAL, Fla. - Space shuttle Discovery, its drag chute unfurled, appears to be a mirage as it travels down Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery'... More

CAPE CANAVERAL, Fla. -- The crew transport vehicle pulls up to space shuttle Discovery on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Alvin Drew, Steve Bowen, Michael Barratt and Nicole Stott will undergo brief medical checks in the crew transport vehicle before they walk around the spacecraft that brought them safely home. Discovery's final return from space completed the 13-day, 5.3-million-mile STS-133 mission. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m.      Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Kim Shiflett KSC-2011-2112

CAPE CANAVERAL, Fla. -- The crew transport vehicle pulls up to space s...

CAPE CANAVERAL, Fla. -- The crew transport vehicle pulls up to space shuttle Discovery on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey, Pil... More

CAPE CANAVERAL, Fla. - Streams of smoke trail from the main landing gear tires as space shuttle Discovery touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida after 13-days in space, completing the 5.3-million-mile STS-133 mission. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen.              Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Linda Perry KSC-2011-2082

CAPE CANAVERAL, Fla. - Streams of smoke trail from the main landing ge...

CAPE CANAVERAL, Fla. - Streams of smoke trail from the main landing gear tires as space shuttle Discovery touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida afte... More

CAPE CANAVERAL, Fla. - NASA Kennedy Space Center workers watch as space shuttle Discovery rolls to a stop on Runway 15 at the Shuttle Landing Facility in Florida. Landing was at 11:57 a.m. EST, completing the 13-day STS-133 mission to the International Space Station. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen.        Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Jack Pfaller KSC-2011-2063

CAPE CANAVERAL, Fla. - NASA Kennedy Space Center workers watch as spac...

CAPE CANAVERAL, Fla. - NASA Kennedy Space Center workers watch as space shuttle Discovery rolls to a stop on Runway 15 at the Shuttle Landing Facility in Florida. Landing was at 11:57 a.m. EST, completing the 1... More

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttle Discovery secure for towing to its processing hangar begins to pull up around the spacecraft following wheelstop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida. Discovery's final return from space completed the 13-day, 5.3-million-mile STS-133 mission. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m.     Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Kim Shiflett KSC-2011-2113

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttl...

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttle Discovery secure for towing to its processing hangar begins to pull up around the spacecraft following wheelstop on the Shuttle Landing Fa... More

CAPE CANAVERAL, Fla. - Space shuttle Discovery closes its 39-mission career with touch down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's final return from space completed the 13-day, 5.3-million-mile STS-133 mission. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen.    Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Sandra Joseph and Kevin O'Connell KSC-2011-2099

CAPE CANAVERAL, Fla. - Space shuttle Discovery closes its 39-mission c...

CAPE CANAVERAL, Fla. - Space shuttle Discovery closes its 39-mission career with touch down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's final return from ... More

CAPE CANAVERAL, Fla. - Space shuttle Discovery's drag chute deploys on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's final return from space completed the 13-day, 5.3-million-mile STS-133 mission.    Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen. Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Tim Powers KSC-2011-2094

CAPE CANAVERAL, Fla. - Space shuttle Discovery's drag chute deploys on...

CAPE CANAVERAL, Fla. - Space shuttle Discovery's drag chute deploys on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's final return from space completed the 13-d... More

CAPE CANAVERAL, Fla. - Space shuttle Discovery touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, completing the 13-day STS-133 mission to the International Space Station. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen.      Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Kim Shiflett KSC-2011-2059

CAPE CANAVERAL, Fla. - Space shuttle Discovery touches down on Runway ...

CAPE CANAVERAL, Fla. - Space shuttle Discovery touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, completing the 13-day STS-133 m... More

CAPE CANAVERAL, Fla. -- Space shuttle Discovery glides above Runway 15 before touching down at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, completing the 13-day STS-133 mission to the International Space Station.           Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen. Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Rusty Backer KSC-2011-2087

CAPE CANAVERAL, Fla. -- Space shuttle Discovery glides above Runway 15...

CAPE CANAVERAL, Fla. -- Space shuttle Discovery glides above Runway 15 before touching down at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, completing t... More

CAPE CANAVERAL, Fla. -- With its drag chute unfurled, space shuttle Discovery rolls down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, completing the 13-day STS-133 mission to the International Space Station.         Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen. Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Tim Terry and Mike Kerley KSC-2011-2066

CAPE CANAVERAL, Fla. -- With its drag chute unfurled, space shuttle Di...

CAPE CANAVERAL, Fla. -- With its drag chute unfurled, space shuttle Discovery rolls down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, co... More

CAPE CANAVERAL, Fla. -- Space shuttle Discovery touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, completing the 13-day STS-133 mission to the International Space Station.         Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen. Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Tom Farrar KSC-2011-2067

CAPE CANAVERAL, Fla. -- Space shuttle Discovery touches down on Runway...

CAPE CANAVERAL, Fla. -- Space shuttle Discovery touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, completing the 13-day STS-133 ... More

CAPE CANAVERAL, Fla. -- Streams of smoke trail from the main landing gear tires as space shuttle Discovery touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida after 13-days in space, completing the 5.3-million-mile STS-133 mission. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen.            Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Ben Cooper KSC-2011-2084

CAPE CANAVERAL, Fla. -- Streams of smoke trail from the main landing g...

CAPE CANAVERAL, Fla. -- Streams of smoke trail from the main landing gear tires as space shuttle Discovery touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida aft... More

CAPE CANAVERAL, Fla. - Space shuttle Discovery's main landing gear tires are down as the spacecraft approaches Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's final return from space completed the 13-day, 5.3-million-mile STS-133 mission. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen.                Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Linda Perry KSC-2011-2081

CAPE CANAVERAL, Fla. - Space shuttle Discovery's main landing gear tir...

CAPE CANAVERAL, Fla. - Space shuttle Discovery's main landing gear tires are down as the spacecraft approaches Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's fi... More

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttle Discovery secure for towing to its processing hangar begins to pull up around the spacecraft following wheelstop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida. Discovery's final return from space completed the 13-day, 5.3-million-mile STS-133 mission. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m.     Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Kim Shiflett KSC-2011-2114

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttl...

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttle Discovery secure for towing to its processing hangar begins to pull up around the spacecraft following wheelstop on the Shuttle Landing Fa... More

CAPE CANAVERAL, Fla. - Space shuttle Discovery appears to be a mirage as it jettisons its drag chute on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's final return from space completed the 13-day, 5.3-million-mile STS-133 mission. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen.    Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Tony Gray and Tom Farrar KSC-2011-2104

CAPE CANAVERAL, Fla. - Space shuttle Discovery appears to be a mirage ...

CAPE CANAVERAL, Fla. - Space shuttle Discovery appears to be a mirage as it jettisons its drag chute on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's final ret... More

CAPE CANAVERAL, Fla. - Space shuttle Discovery's drag chute deploys on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's final return from space completed the 13-day, 5.3-million-mile STS-133 mission.    Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen. Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Tim Powers KSC-2011-2093

CAPE CANAVERAL, Fla. - Space shuttle Discovery's drag chute deploys on...

CAPE CANAVERAL, Fla. - Space shuttle Discovery's drag chute deploys on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's final return from space completed the 13-d... More

CAPE CANAVERAL, Fla. -- Space shuttle Discovery glides above Runway 15 before touching down at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, completing the 13-day STS-133 mission to the International Space Station.           Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen. Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Chad Baumer KSC-2011-2089

CAPE CANAVERAL, Fla. -- Space shuttle Discovery glides above Runway 15...

CAPE CANAVERAL, Fla. -- Space shuttle Discovery glides above Runway 15 before touching down at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, completing t... More

CAPE CANAVERAL, Fla. - Space shuttle Discovery touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, completing the 13-day STS-133 mission to the International Space Station. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen.        Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Kim Shiflett KSC-2011-2060

CAPE CANAVERAL, Fla. - Space shuttle Discovery touches down on Runway ...

CAPE CANAVERAL, Fla. - Space shuttle Discovery touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, completing the 13-day STS-133 m... More

CAPE CANAVERAL, Fla. - Space shuttle Discovery appears to be a mirage as it makes its way down Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's final return from space completed the 13-day, 5.3-million-mile STS-133 mission. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen.    Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Tony Gray and Tom Farrar KSC-2011-2105

CAPE CANAVERAL, Fla. - Space shuttle Discovery appears to be a mirage ...

CAPE CANAVERAL, Fla. - Space shuttle Discovery appears to be a mirage as it makes its way down Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's final return from ... More

CAPE CANAVERAL, Fla. -- Streams of smoke trail from the main landing gear tires as space shuttle Discovery touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, completing the 13-day STS-133 mission to the International Space Station.         Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen. Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Chad Baumer KSC-2011-2090

CAPE CANAVERAL, Fla. -- Streams of smoke trail from the main landing g...

CAPE CANAVERAL, Fla. -- Streams of smoke trail from the main landing gear tires as space shuttle Discovery touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. La... More

CAPE CANAVERAL, Fla. -- The nose gear on space shuttle Discovery descends in anticipation of touch down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's final return from space completed the 13-day, 5.3-million-mile STS-133 mission. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen.    Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Sandra Joseph and Kevin O'Connell KSC-2011-2100

CAPE CANAVERAL, Fla. -- The nose gear on space shuttle Discovery desce...

CAPE CANAVERAL, Fla. -- The nose gear on space shuttle Discovery descends in anticipation of touch down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's final ... More

CAPE CANAVERAL, Fla. -- Space shuttle Discovery glides above Runway 15 before touching down at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, completing the 13-day STS-133 mission to the International Space Station.           Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen. Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Rusty Backer KSC-2011-2088

CAPE CANAVERAL, Fla. -- Space shuttle Discovery glides above Runway 15...

CAPE CANAVERAL, Fla. -- Space shuttle Discovery glides above Runway 15 before touching down at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, completing t... More

CAPE CANAVERAL, Fla. -- Space shuttle Discovery touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, completing the 13-day STS-133 mission to the International Space Station.         Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen. Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Tom Farrar KSC-2011-2068

CAPE CANAVERAL, Fla. -- Space shuttle Discovery touches down on Runway...

CAPE CANAVERAL, Fla. -- Space shuttle Discovery touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, completing the 13-day STS-133 ... More

CAPE CANAVERAL, Fla. - The nose gear on space shuttle Discovery descends to support touch down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's final return from space completed the 13-day, 5.3-million-mile STS-133 mission. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen.    Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Sandra Joseph and Kevin O'Connell KSC-2011-2101

CAPE CANAVERAL, Fla. - The nose gear on space shuttle Discovery descen...

CAPE CANAVERAL, Fla. - The nose gear on space shuttle Discovery descends to support touch down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's final return fr... More

CAPE CANAVERAL, Fla. -- Space shuttle Discovery touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, completing the 13-day STS-133 mission to the International Space Station.         Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen. Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Chuck Tintera KSC-2011-2070

CAPE CANAVERAL, Fla. -- Space shuttle Discovery touches down on Runway...

CAPE CANAVERAL, Fla. -- Space shuttle Discovery touches down on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Landing was at 11:57 a.m. EST, completing the 13-day STS-133 ... More

CAPE CANAVERAL, Fla. - Space shuttle Discovery appears to be a mirage as it coasts down Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's final return from space completed the 13-day, 5.3-million-mile STS-133 mission. Main gear touchdown was at 11:57:17 a.m., followed by nose gear touchdown at 11:57:28, and wheelstop at 11:58:14 a.m. On board are Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Nicole Stott, Michael Barratt, Alvin Drew and Steve Bowen.    Discovery and its six-member crew delivered the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the orbiting outpost. STS-133 was Discovery's 39th and final mission. This was the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA/Tony Gray and Tom Farrar KSC-2011-2106

CAPE CANAVERAL, Fla. - Space shuttle Discovery appears to be a mirage ...

CAPE CANAVERAL, Fla. - Space shuttle Discovery appears to be a mirage as it coasts down Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Discovery's final return from space c... More

CAPE CANAVERAL, Fla. -- The Convoy Command Center vehicle is positioned near shuttle Endeavour on the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. The command vehicle is equipped to control critical communications between the crew still aboard Endeavour and the Launch Control Center. The team will monitor the health of the orbiter systems and direct convoy operations made up of about 40 vehicles, including 25 specially designed vehicles to assist the crew in leaving the shuttle, and prepare the vehicle for towing from the Shuttle Landing Facility to Orbiter Processing Facility-1.    Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Ben Smegelsky KSC-2011-4248

CAPE CANAVERAL, Fla. -- The Convoy Command Center vehicle is positione...

CAPE CANAVERAL, Fla. -- The Convoy Command Center vehicle is positioned near shuttle Endeavour on the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. The command vehicle is equipped to contr... More

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttle Endeavour safe and secure for towing to its processing hangar begins to pull up around the vehicle following wheelstop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida. Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.  STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kim Shiflett KSC-2011-4197

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttl...

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttle Endeavour safe and secure for towing to its processing hangar begins to pull up around the vehicle following wheelstop on the Shuttle Land... More

CAPE CANAVERAL, Fla. -- Xenon lights illuminate space shuttle Endeavour's unfurled drag chute as the vehicle rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori.    STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kenny Allen KSC-2011-4178

CAPE CANAVERAL, Fla. -- Xenon lights illuminate space shuttle Endeavou...

CAPE CANAVERAL, Fla. -- Xenon lights illuminate space shuttle Endeavour's unfurled drag chute as the vehicle rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida... More

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttle Endeavour safe and secure for towing to its processing hangar begins to pull up around the vehicle following wheelstop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida. Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.              Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.   Endeavour and its crew delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Jack Pfaller KSC-2011-4241

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttl...

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttle Endeavour safe and secure for towing to its processing hangar begins to pull up around the vehicle following wheelstop on the Shuttle Land... More

CAPE CANAVERAL, Fla. -- The crew of space shuttle Endeavour's STS-134 mission to the International Space Station participates in a news conference in the Press Site auditorium at NASA's Kennedy Space Center in Florida on landing day. From left are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, Mission Specialists Michael Finke, Roberto Vittori, astronaut with the European Space Agency and Andrew Feustel.            Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.   Endeavour and its crew delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Jim Grossmann KSC-2011-4245

CAPE CANAVERAL, Fla. -- The crew of space shuttle Endeavour's STS-134 ...

CAPE CANAVERAL, Fla. -- The crew of space shuttle Endeavour's STS-134 mission to the International Space Station participates in a news conference in the Press Site auditorium at NASA's Kennedy Space Center in ... More

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori.    STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kevin O'Connell KSC-2011-4194

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour rolls to a stop on the...

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Main gear touchdown was at 2:34:51 a.m. ... More

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour's STS-134 crew members talk with employees following their successful trip home. Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown on the Shuttle Landing Facility's Runway 15 was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.  STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kim Shiflett KSC-2011-4208

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour's STS-134 crew members...

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour's STS-134 crew members talk with employees following their successful trip home. Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-13... More

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttle Endeavour safe and secure for towing to its processing hangar begins to pull up around the vehicle following wheelstop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida. Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.              Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.   Endeavour and its crew delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Jack Pfaller KSC-2011-4242

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttl...

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttle Endeavour safe and secure for towing to its processing hangar begins to pull up around the vehicle following wheelstop on the Shuttle Land... More

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori.    STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kevin O'Connell KSC-2011-4191

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour rolls to a stop on the...

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Main gear touchdown was at 2:34:51 a.m. ... More

CAPE CANAVERAL, Fla. -- A "towback" vehicle slowly pulls shuttle Endeavour into Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. A purge unit that pumps conditioned air into a shuttle after landing is connected to Endeavour's aft end. Once inside the processing facility, Endeavour will be prepared for future public display.              Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.   Endeavour and its crew delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Jack Pfaller KSC-2011-4276

CAPE CANAVERAL, Fla. -- A "towback" vehicle slowly pulls shuttle Endea...

CAPE CANAVERAL, Fla. -- A "towback" vehicle slowly pulls shuttle Endeavour into Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. A purge unit that pumps conditioned air into a shuttle af... More

CAPE CANAVERAL, Fla. -- Heat from space shuttle Endeavour's auxiliary power units (APUs), which provide hydraulic control, can be seen at the back of the shuttle, near the vertical tail. Endeavour landed for the final time on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida, marking the 25th night landing of the Space Shuttle Program. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori.    STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kenny Allen KSC-2011-4182

CAPE CANAVERAL, Fla. -- Heat from space shuttle Endeavour's auxiliary ...

CAPE CANAVERAL, Fla. -- Heat from space shuttle Endeavour's auxiliary power units (APUs), which provide hydraulic control, can be seen at the back of the shuttle, near the vertical tail. Endeavour landed for th... More

CAPE CANAVERAL, Fla. -- The crew of space shuttle Endeavour's STS-134 mission to the International Space Station participates in a news conference in the Press Site auditorium at NASA's Kennedy Space Center in Florida on landing day. From left are Public Affairs Officer Candrea Thomas,  STS-134 Commander Mark Kelly, Pilot Greg H. Johnson; Mission Specialists Michael Finke, Roberto Vittori, astronaut with the European Space Agency and Andrew Feustel.              Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.   Endeavour and its crew delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Jim Grossmann KSC-2011-4244

CAPE CANAVERAL, Fla. -- The crew of space shuttle Endeavour's STS-134 ...

CAPE CANAVERAL, Fla. -- The crew of space shuttle Endeavour's STS-134 mission to the International Space Station participates in a news conference in the Press Site auditorium at NASA's Kennedy Space Center in ... More

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, space shuttle Endeavour's "towback" vehicle slowly pulls it from the Shuttle Landing Facility to Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. A purge unit that pumps conditioned air into a shuttle after landing is connected to Endeavour's aft end. Once inside the processing facility, Endeavour will be prepared for future public display.          Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.   Endeavour and its crew delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Jack Pfaller KSC-2011-4264

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, spac...

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, space shuttle Endeavour's "towback" vehicle slowly pulls it from the Shuttle Landing Facility to Orbiter Processing Facility-1 at NASA's Kennedy... More

CAPE CANAVERAL, Fla. -- Workers accompany shuttle Endeavour as a "towback" vehicle slowly pulls it from the Shuttle Landing Facility to Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. A purge unit that pumps conditioned air into a shuttle after landing is connected to Endeavour's aft end. Once inside the processing facility, Endeavour will be prepared for future public display.                Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.   Endeavour and its crew delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Jack Pfaller KSC-2011-4271

CAPE CANAVERAL, Fla. -- Workers accompany shuttle Endeavour as a "towb...

CAPE CANAVERAL, Fla. -- Workers accompany shuttle Endeavour as a "towback" vehicle slowly pulls it from the Shuttle Landing Facility to Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. A... More

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttle Endeavour safe and secure for towing to its processing hangar begins to pull up around the vehicle following wheelstop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida. Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.  STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kim Shiflett KSC-2011-4196

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttl...

CAPE CANAVERAL, Fla. -- The landing convoy that will make space shuttle Endeavour safe and secure for towing to its processing hangar begins to pull up around the vehicle following wheelstop on the Shuttle Land... More

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori.    STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kevin O'Connell KSC-2011-4193

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour rolls to a stop on the...

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Main gear touchdown was at 2:34:51 a.m. ... More

CAPE CANAVERAL, Fla. -- Xenon lights illuminate space shuttle Endeavour's unfurled drag chute as the vehicle rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori.      STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Tony Gray KSC-2011-4175

CAPE CANAVERAL, Fla. -- Xenon lights illuminate space shuttle Endeavou...

CAPE CANAVERAL, Fla. -- Xenon lights illuminate space shuttle Endeavour's unfurled drag chute as the vehicle rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida... More

CAPE CANAVERAL, Fla. -- Associate Administrator for Space Operations Bill Gerstenmaier, left, European Space Agency Director of Human Spaceflight Thomas Reiter and NASA Administrator Charlie Bolden chat underneath the belly of space shuttle Endeavour following the vehicle's successful trip home to NASA's Kennedy Space Center in Florida. Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown on the Shuttle Landing Facility's Runway 15 was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kim Shiflett KSC-2011-4203

CAPE CANAVERAL, Fla. -- Associate Administrator for Space Operations B...

CAPE CANAVERAL, Fla. -- Associate Administrator for Space Operations Bill Gerstenmaier, left, European Space Agency Director of Human Spaceflight Thomas Reiter and NASA Administrator Charlie Bolden chat underne... More

CAPE CANAVERAL, Fla. -- Employees admire space shuttle Endeavour as the landing convoy makes the vehicle safe and secure for towing to its processing hangar at NASA's Kennedy Space Center in Florida. Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown on the Shuttle Landing Facility's Runway 15 was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.  STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kim Shiflett KSC-2011-4204

CAPE CANAVERAL, Fla. -- Employees admire space shuttle Endeavour as th...

CAPE CANAVERAL, Fla. -- Employees admire space shuttle Endeavour as the landing convoy makes the vehicle safe and secure for towing to its processing hangar at NASA's Kennedy Space Center in Florida. Endeavour'... More

CAPE CANAVERAL, Fla. -- Endeavour touches down on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time marking the 25th night landing of NASA's Space Shuttle Program. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.         On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori. STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Sandra Joseph and Kevin O'Connell KSC-2011-4235

CAPE CANAVERAL, Fla. -- Endeavour touches down on the Shuttle Landing ...

CAPE CANAVERAL, Fla. -- Endeavour touches down on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time marking the 25th night landing of NASA's Space Shuttle Pro... More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, a team of highly trained personnel inside the Convoy Command Vehicle is ready to "safe" shuttle Endeavour. The command vehicle is equipped to control critical communications between the crew still aboard Endeavour and the Launch Control Center. The team will monitor the health of the orbiter systems and direct convoy operations made up of about 40 vehicles, including 25 specially designed vehicles to assist the crew in leaving the shuttle, and prepare the vehicle for towing from the Shuttle Landing Facility to Orbiter Processing Facility-1.    Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Ben Smegelsky KSC-2011-4246

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, a t...

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, a team of highly trained personnel inside the Convoy Command Vehicle is ready to "safe" shuttle Endeavour. The command vehicle is equipped to c... More

CAPE CANAVERAL, Fla. -- Xenon lights illuminate space shuttle Endeavour's unfurled drag chute as the vehicle rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori.     STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Tom Farrar KSC-2011-4188

CAPE CANAVERAL, Fla. -- Xenon lights illuminate space shuttle Endeavou...

CAPE CANAVERAL, Fla. -- Xenon lights illuminate space shuttle Endeavour's unfurled drag chute as the vehicle rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida... More

CAPE CANAVERAL, Fla. -- Xenon lights help lead space shuttle Endeavour home to NASA's Kennedy Space Center in Florida. Endeavour landed for the final time on the Shuttle Landing Facility's Runway 15, marking the 25th night landing of NASA's Space Shuttle Program. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori.       STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/George Roberto KSC-2011-4183

CAPE CANAVERAL, Fla. -- Xenon lights help lead space shuttle Endeavour...

CAPE CANAVERAL, Fla. -- Xenon lights help lead space shuttle Endeavour home to NASA's Kennedy Space Center in Florida. Endeavour landed for the final time on the Shuttle Landing Facility's Runway 15, marking th... More

CAPE CANAVERAL, Fla. -- Xenon lights illuminate space shuttle Endeavour's unfurled drag chute as the vehicle rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori.       STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/George Roberto KSC-2011-4185

CAPE CANAVERAL, Fla. -- Xenon lights illuminate space shuttle Endeavou...

CAPE CANAVERAL, Fla. -- Xenon lights illuminate space shuttle Endeavour's unfurled drag chute as the vehicle rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida... More

CAPE CANAVERAL, Fla. -- NASA Administrator Charlie Bolden, left, and NASA Kennedy Space Center Director Bob Cabana greet space shuttle Endeavour's STS-134 commander and pilot following their successful trip home. Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown on the Shuttle Landing Facility's Runway 15 was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.  STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kim Shiflett KSC-2011-4206

CAPE CANAVERAL, Fla. -- NASA Administrator Charlie Bolden, left, and N...

CAPE CANAVERAL, Fla. -- NASA Administrator Charlie Bolden, left, and NASA Kennedy Space Center Director Bob Cabana greet space shuttle Endeavour's STS-134 commander and pilot following their successful trip hom... More

CAPE CANAVERAL, Fla. -- Streams of smoke trail from the main landing gear tires as space shuttle Endeavour touches down on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori.    STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Tony Gray KSC-2011-4174

CAPE CANAVERAL, Fla. -- Streams of smoke trail from the main landing g...

CAPE CANAVERAL, Fla. -- Streams of smoke trail from the main landing gear tires as space shuttle Endeavour touches down on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for ... More

CAPE CANAVERAL, Fla. -- Xenon lights help lead space shuttle Endeavour home to NASA's Kennedy Space Center in Florida. Endeavour landed for the final time on the Shuttle Landing Facility's Runway 15, marking the 25th night landing of NASA's Space Shuttle Program. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.             On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori. STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Sandra Joseph and Kevin O'Connell KSC-2011-4237

CAPE CANAVERAL, Fla. -- Xenon lights help lead space shuttle Endeavour...

CAPE CANAVERAL, Fla. -- Xenon lights help lead space shuttle Endeavour home to NASA's Kennedy Space Center in Florida. Endeavour landed for the final time on the Shuttle Landing Facility's Runway 15, marking th... More

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, media photograph space shuttle Endeavour as a "towback" vehicle slowly pulls it from the Shuttle Landing Facility to Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. Once inside the processing facility, Endeavour will be prepared for future public display.      Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.   Endeavour and its crew delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Jack Pfaller KSC-2011-4269

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, medi...

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, media photograph space shuttle Endeavour as a "towback" vehicle slowly pulls it from the Shuttle Landing Facility to Orbiter Processing Facility... More

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, space shuttle Endeavour's "towback" vehicle slowly pulls it from the Shuttle Landing Facility to Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. A purge unit that pumps conditioned air into a shuttle after landing is connected to Endeavour's aft end. Once inside the processing facility, Endeavour will be prepared for future public display.            Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.   Endeavour and its crew delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Jack Pfaller KSC-2011-4266

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, spac...

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, space shuttle Endeavour's "towback" vehicle slowly pulls it from the Shuttle Landing Facility to Orbiter Processing Facility-1 at NASA's Kennedy... More

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, space shuttle Endeavour's "towback" vehicle slowly pulls it from the Shuttle Landing Facility to Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. A purge unit that pumps conditioned air into a shuttle after landing is connected to Endeavour's aft end. Once inside the processing facility, Endeavour will be prepared for future public display.          Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.   Endeavour and its crew delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Jack Pfaller KSC-2011-4268

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, spac...

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, space shuttle Endeavour's "towback" vehicle slowly pulls it from the Shuttle Landing Facility to Orbiter Processing Facility-1 at NASA's Kennedy... More

CAPE CANAVERAL, Fla. -- STS-134 Mission Specialists Drew Feustel, left, and Roberto Vittori with the European Space Agency, right, admire space shuttle Endeavour with NASA astronaut Randy Bresnik at NASA's Kennedy Space Center in Florida. Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown on the Shuttle Landing Facility's Runway 15 was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.   STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kim Shiflett KSC-2011-4209

CAPE CANAVERAL, Fla. -- STS-134 Mission Specialists Drew Feustel, left...

CAPE CANAVERAL, Fla. -- STS-134 Mission Specialists Drew Feustel, left, and Roberto Vittori with the European Space Agency, right, admire space shuttle Endeavour with NASA astronaut Randy Bresnik at NASA's Kenn... More

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, space shuttle Endeavour's "towback" vehicle slowly pulls it from the Shuttle Landing Facility to Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. A purge unit that pumps conditioned air into a shuttle after landing is connected to Endeavour's aft end. Once inside the processing facility, Endeavour will be prepared for future public display.            Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.   Endeavour and its crew delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Jack Pfaller KSC-2011-4265

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, spac...

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, space shuttle Endeavour's "towback" vehicle slowly pulls it from the Shuttle Landing Facility to Orbiter Processing Facility-1 at NASA's Kennedy... More

CAPE CANAVERAL, Fla. -- Workers measured and marked the spot where shuttle Endeavour's nose gear came to a stop after the vehicle's final return from space completing a 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kim Shiflett KSC-2011-4200

CAPE CANAVERAL, Fla. -- Workers measured and marked the spot where shu...

CAPE CANAVERAL, Fla. -- Workers measured and marked the spot where shuttle Endeavour's nose gear came to a stop after the vehicle's final return from space completing a 16-day, 6.5-million-mile STS-134 mission.... More

CAPE CANAVERAL, Fla. -- A vapor trail follows space shuttle Endeavour as it approaches Runway 15 on the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida for the final time. A vapor trail, known as a contrail, is a cloud of water vapor that condenses and freezes around the small particles in aircraft exhaust. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori.     STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Tom Joseph KSC-2011-4186

CAPE CANAVERAL, Fla. -- A vapor trail follows space shuttle Endeavour ...

CAPE CANAVERAL, Fla. -- A vapor trail follows space shuttle Endeavour as it approaches Runway 15 on the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida for the final time. A vapor trail, know... More

CAPE CANAVERAL, Fla. -- Shuttle Launch Director Mike Leinbach, left, greets space shuttle Endeavour's STS-134 crew members following their successful trip home. Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown on the Shuttle Landing Facility's Runway 15 was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.  STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kim Shiflett KSC-2011-4207

CAPE CANAVERAL, Fla. -- Shuttle Launch Director Mike Leinbach, left, g...

CAPE CANAVERAL, Fla. -- Shuttle Launch Director Mike Leinbach, left, greets space shuttle Endeavour's STS-134 crew members following their successful trip home. Endeavour's final return from space completed the... More

CAPE CANAVERAL, Fla. -- Streams of smoke trail from the main landing gear tires as space shuttle Endeavour touches down on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time marking the 25th night landing of NASA's Space Shuttle Program. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.           On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori. STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Sandra Joseph and Kevin O'Connell KSC-2011-4234

CAPE CANAVERAL, Fla. -- Streams of smoke trail from the main landing g...

CAPE CANAVERAL, Fla. -- Streams of smoke trail from the main landing gear tires as space shuttle Endeavour touches down on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for ... More

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, space shuttle Endeavour's "towback" vehicle slowly pulls it from the Shuttle Landing Facility to Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. A purge unit that pumps conditioned air into a shuttle after landing is connected to Endeavour's aft end. In the background is the massive Vehicle Assembly Building. Once inside the processing facility, Endeavour will be prepared for future public display.        Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.   Endeavour and its crew delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Jack Pfaller KSC-2011-4267

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, spac...

CAPE CANAVERAL, Fla. -- In the early morning hours after landing, space shuttle Endeavour's "towback" vehicle slowly pulls it from the Shuttle Landing Facility to Orbiter Processing Facility-1 at NASA's Kennedy... More

CAPE CANAVERAL, Fla. -- Xenon lights illuminate space shuttle Endeavour's unfurled drag chute as the vehicle rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Heat from the shuttle's auxiliary power units (APUs), which provide hydraulic control, can be seen at the back of Endeavour, near the vertical tail. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori.      STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kenny Allen KSC-2011-4179

CAPE CANAVERAL, Fla. -- Xenon lights illuminate space shuttle Endeavou...

CAPE CANAVERAL, Fla. -- Xenon lights illuminate space shuttle Endeavour's unfurled drag chute as the vehicle rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida... More

CAPE CANAVERAL, Fla. -- Xenon lights help lead space shuttle Endeavour home to NASA's Kennedy Space Center in Florida. Endeavour landed for the final time on the Shuttle Landing Facility's Runway 15, marking the 25th night landing of NASA's Space Shuttle Program. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.             On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori. STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Tom Farrar and Tony Gray KSC-2011-4238

CAPE CANAVERAL, Fla. -- Xenon lights help lead space shuttle Endeavour...

CAPE CANAVERAL, Fla. -- Xenon lights help lead space shuttle Endeavour home to NASA's Kennedy Space Center in Florida. Endeavour landed for the final time on the Shuttle Landing Facility's Runway 15, marking th... More

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Heat from the shuttle's auxiliary power units (APUs), which provide hydraulic control, can be seen at the back of Endeavour, near the vertical tail. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori.       STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kenny Allen KSC-2011-4180

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour rolls to a stop on the...

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour rolls to a stop on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Heat from the shuttle's auxiliary power ... More

CAPE CANAVERAL, Fla. -- A vapor trail follows space shuttle Endeavour as it approaches Runway 15 on the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida for the final time. A vapor trail, known as a contrail, is a cloud of water vapor that condenses and freezes around the small particles in aircraft exhaust. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori.       STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Chuck Tintera KSC-2011-4172

CAPE CANAVERAL, Fla. -- A vapor trail follows space shuttle Endeavour ...

CAPE CANAVERAL, Fla. -- A vapor trail follows space shuttle Endeavour as it approaches Runway 15 on the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida for the final time. A vapor trail, know... More

CAPE CANAVERAL, Fla. -- European Space Agency Director of Human Spaceflight Thomas Reiter, left, Associate Administrator for Space Operations Bill Gerstenmaier, and NASA Kennedy Space Center Director Bob Cabana check out a heat shield tile that protected space shuttle Endeavour on its successful trip home. Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown on the Shuttle Landing Facility's Runway 15 was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kim Shiflett KSC-2011-4201

CAPE CANAVERAL, Fla. -- European Space Agency Director of Human Spacef...

CAPE CANAVERAL, Fla. -- European Space Agency Director of Human Spaceflight Thomas Reiter, left, Associate Administrator for Space Operations Bill Gerstenmaier, and NASA Kennedy Space Center Director Bob Cabana... More

CAPE CANAVERAL, Fla. -- STS-134 Commander Mark Kelly, left, and NASA Administrator Charlie Bolden chat with employees following the successful return of space shuttle Endeavour to NASA's Kennedy Space Center in Florida. Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown on the Shuttle Landing Facility's Runway 15 was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.  STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kim Shiflett KSC-2011-4213

CAPE CANAVERAL, Fla. -- STS-134 Commander Mark Kelly, left, and NASA A...

CAPE CANAVERAL, Fla. -- STS-134 Commander Mark Kelly, left, and NASA Administrator Charlie Bolden chat with employees following the successful return of space shuttle Endeavour to NASA's Kennedy Space Center in... More

CAPE CANAVERAL, Fla. -- NASA's Deputy Manager for the Space Shuttle Program Leroy Cain, left, and Kennedy Center Director Bob Cabana chat underneath the belly of space shuttle Endeavour following the vehicle's successful trip home. Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown on the Shuttle Landing Facility's Runway 15 was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.  STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kim Shiflett KSC-2011-4202

CAPE CANAVERAL, Fla. -- NASA's Deputy Manager for the Space Shuttle Pr...

CAPE CANAVERAL, Fla. -- NASA's Deputy Manager for the Space Shuttle Program Leroy Cain, left, and Kennedy Center Director Bob Cabana chat underneath the belly of space shuttle Endeavour following the vehicle's ... More

CAPE CANAVERAL, Fla. -- STS-134 Pilot Greg H. Johnson, left, and Commander Mark Kelly check out the nose of space shuttle Endeavour following the successful return to NASA's Kennedy Space Center in Florida. Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown on the Shuttle Landing Facility's Runway 15 was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m.  STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kim Shiflett KSC-2011-4211

CAPE CANAVERAL, Fla. -- STS-134 Pilot Greg H. Johnson, left, and Comma...

CAPE CANAVERAL, Fla. -- STS-134 Pilot Greg H. Johnson, left, and Commander Mark Kelly check out the nose of space shuttle Endeavour following the successful return to NASA's Kennedy Space Center in Florida. End... More

CAPE CANAVERAL, Fla. -- A towback technician is seen through the cockpit windows of space shuttle Atlantis as he safes the vehicle on the Shuttle Landing Facility's  Runway 15 at NASA's Kennedy Space Center in Florida. Atlantis' final landing was the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board were STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandra Magnus and Rex Walheim.    On the 37th shuttle mission to the International Space Station, STS-135 delivered the Raffaello multi-purpose logistics module filled with more than 9,400 pounds of spare parts, equipment and supplies that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles, and also the final mission of the Space Shuttle Program.  For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5807

CAPE CANAVERAL, Fla. -- A towback technician is seen through the cockp...

CAPE CANAVERAL, Fla. -- A towback technician is seen through the cockpit windows of space shuttle Atlantis as he safes the vehicle on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in ... More

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis creates its own xenon light show as in lands on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Securing the space shuttle fleet's place in history, Atlantis marked the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board are STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandra Magnus and Rex Walheim.    On the 37th shuttle mission to the International Space Station, STS-135 delivered in the Raffaello multi-purpose logistics module    more than 9,400 pounds of spare parts, equipment and supplies that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. STS-135 is the final mission in the Space Shuttle Program.  For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Chuck Tintera KSC-2011-5701

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis creates its own xenon l...

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis creates its own xenon light show as in lands on Runway 15 at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Securing the space shuttle fle... More

CAPE CANAVERAL, Fla. -- Xenon lights positioned at the end of Runway 15 reveal that the drag chute has deployed behind space shuttle Atlantis to slow the shuttle as it lands for the last time at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Securing the space shuttle fleet's place in history, Atlantis marked the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board are STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandy Magnus and Rex Walheim.    On the 37th shuttle mission to the International Space Station, STS-135 delivered the Raffaello multi-purpose logistics module filled with more than 9,400 pounds of spare parts, equipment and supplies that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. STS-135 also was the final mission of the Space Shuttle Program.  For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Tom Farrar and Tony Gray KSC-2011-5863

CAPE CANAVERAL, Fla. -- Xenon lights positioned at the end of Runway 1...

CAPE CANAVERAL, Fla. -- Xenon lights positioned at the end of Runway 15 reveal that the drag chute has deployed behind space shuttle Atlantis to slow the shuttle as it lands for the last time at the Shuttle Lan... More

CAPE CANAVERAL, Fla. -- The crew of space shuttle Atlantis' STS-135 and final Space Shuttle Program Flight, participates in a news conference in the Press Site auditorium at NASA's Kennedy Space Center in Florida on landing day. Seen here is STS-135 Commander Chris Ferguson speaking to media.          Securing the space shuttle fleet's place in history, Atlantis marked the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. Atlantis and its crew delivered to the International Space Station the Raffaello multi-purpose logistics module packed with  more than 9,400 pounds of spare parts, equipment and supplies that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jim Grossmann KSC-2011-5736

CAPE CANAVERAL, Fla. -- The crew of space shuttle Atlantis' STS-135 an...

CAPE CANAVERAL, Fla. -- The crew of space shuttle Atlantis' STS-135 and final Space Shuttle Program Flight, participates in a news conference in the Press Site auditorium at NASA's Kennedy Space Center in Flori... More

CAPE CANAVERAL, Fla. -- The Convoy Command Center vehicle is positioned near space shuttle Atlantis outside Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida. The command vehicle is equipped to control critical communications between the crew still aboard Atlantis and the Launch Control Center. The Convoy Command Center vehicle is part of about 40 vehicles, including 25 specially designed vehicles to assist the crew in leaving the shuttle, and prepare the vehicle for towing from the SLF to its processing hangar. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board were STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandra Magnus and Rex Walheim.    Securing the space shuttle fleet's place in history, Atlantis marks the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Atlantis and its crew delivered to the International Space Station the Raffaello multi-purpose logistics module packed with more than 9,400 pounds of spare parts, equipment and supplies that will sustain station operations for the next year. STS-135 is the 33rd and final flight for Atlantis and the final mission of the Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Ben Smegelsky KSC-2011-5753

CAPE CANAVERAL, Fla. -- The Convoy Command Center vehicle is positione...

CAPE CANAVERAL, Fla. -- The Convoy Command Center vehicle is positioned near space shuttle Atlantis outside Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida. The command vehicle is equipp... More

CAPE CANAVERAL, Fla. -- Backlit by the xenon lights on Runway 15 at the Shuttle Landing Facility, space shuttle Atlantis nears touchdown for the final time at NASA's Kennedy Space Center in Florida.  Securing the space shuttle fleet's place in history, Atlantis marked the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board are STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandra Magnus and Rex Walheim.    On the 37th shuttle mission to the International Space Station, STS-135 delivered the Raffaello multi-purpose logistics module    filled with more than 9,400 pounds of spare parts, equipment and supplies that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. STS-135 also was the final mission of the Space Shuttle Program.  For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Chad Baumer KSC-2011-5705

CAPE CANAVERAL, Fla. -- Backlit by the xenon lights on Runway 15 at th...

CAPE CANAVERAL, Fla. -- Backlit by the xenon lights on Runway 15 at the Shuttle Landing Facility, space shuttle Atlantis nears touchdown for the final time at NASA's Kennedy Space Center in Florida. Securing t... More

CAPE CANAVERAL, Fla. -- Xenon lights guide space shuttle Atlantis down on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Securing the space shuttle fleet's place in history, Atlantis marked the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board are STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandra Magnus and Rex Walheim.    On the 37th shuttle mission to the International Space Station, STS-135 delivered more than 9,400 pounds of spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Frank Michaux KSC-2011-5632

CAPE CANAVERAL, Fla. -- Xenon lights guide space shuttle Atlantis down...

CAPE CANAVERAL, Fla. -- Xenon lights guide space shuttle Atlantis down on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Securing the space shuttle fleet'... More

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis' bright-white, iconic frame illuminates the darkness as it touches down on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for the final time. Securing the space shuttle fleet's place in history, Atlantis marked the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board are STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandra Magnus and Rex Walheim.              On the 37th shuttle mission to the International Space Station, STS-135 delivered more than 9,400 pounds of spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Sandra Joseph KSC-2011-5654

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis' bright-white, iconic f...

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis' bright-white, iconic frame illuminates the darkness as it touches down on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida for t... More

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis streaks out of the darkness onto the Shuttle Landing Facility's  Runway 15 at NASA's Kennedy Space Center in Florida. Atlantis marked the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board are STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandra Magnus and Rex Walheim.    On the 37th shuttle mission to the International Space Station, STS-135 delivered the Raffaello multi-purpose logistics module filled with more than 9,400 pounds of spare parts, equipment and supplies that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. It was the final mission of the Space Shuttle Program.  For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Sandra Joseph and Kevin O'Connell KSC-2011-5834

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis streaks out of the dark...

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis streaks out of the darkness onto the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida. Atlantis marked the 26th nighttime landing of... More

CAPE CANAVERAL, Fla. -- Xenon lights create a halo around space shuttle Atlantis as the spacecraft nears touchdown for the last time on Runway 15 at NASA's Kennedy Space Center in Florida. Securing the space shuttle fleet's place in history, Atlantis marked the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board are STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandra Magnus and Rex Walheim.    On the 37th shuttle mission to the International Space Station, STS-135 delivered the Raffaello multi-purpose logistics module filled with more than 9,400 pounds of spare parts, equipment and supplies that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. STS-135 also was the final mission of the Space Shuttle Program.  For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kenny Allen KSC-2011-5713

CAPE CANAVERAL, Fla. -- Xenon lights create a halo around space shuttl...

CAPE CANAVERAL, Fla. -- Xenon lights create a halo around space shuttle Atlantis as the spacecraft nears touchdown for the last time on Runway 15 at NASA's Kennedy Space Center in Florida. Securing the space sh... More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, the position of space shuttle Atlantis on Runway 15 at the Shuttle Landing Facility is made apparent by the illuminated drag chute trailing it. Securing the space shuttle fleet's place in history, Atlantis marked the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board are STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandra Magnus and Rex Walheim.    On the 37th shuttle mission to the International Space Station, STS-135 delivered the Raffaello multi-purpose logistics module filled with more than 9,400 pounds of spare parts, equipment and supplies that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. STS-135 also was the final mission of the Space Shuttle Program.  For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kenny Allen KSC-2011-5727

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, the...

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, the position of space shuttle Atlantis on Runway 15 at the Shuttle Landing Facility is made apparent by the illuminated drag chute trailing it.... More

CAPE CANAVERAL, Fla. -- Xenons light the way home for space shuttle Atlantis at NASA's Kennedy Space Center in Florida for the final time. Securing the space shuttle fleet's place in history, Atlantis marked the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Main gear touchdown on the Shuttle Landing Facility's Runway 15 was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board are STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandra Magnus and Rex Walheim.          On the 37th shuttle mission to the International Space Station, STS-135 delivered more than 9,400 pounds of spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Sandra Joseph KSC-2011-5644

CAPE CANAVERAL, Fla. -- Xenons light the way home for space shuttle At...

CAPE CANAVERAL, Fla. -- Xenons light the way home for space shuttle Atlantis at NASA's Kennedy Space Center in Florida for the final time. Securing the space shuttle fleet's place in history, Atlantis marked th... More

CAPE CANAVERAL, Fla. -- At the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, the drag chute trailing space shuttle Atlantis slows the almost indistinguishable shuttle as it lands on Runway 15 one final time.  Securing the space shuttle fleet's place in history, Atlantis marked the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board are STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandra Magnus and Rex Walheim.    On the 37th shuttle mission to the International Space Station, STS-135 delivered the Raffaello multi-purpose logistics module filled with more than 9,400 pounds of spare parts, equipment and supplies that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. STS-135 also was the final mission of the Space Shuttle Program.  For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kenny Allen KSC-2011-5730

CAPE CANAVERAL, Fla. -- At the Shuttle Landing Facility at NASA's Kenn...

CAPE CANAVERAL, Fla. -- At the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, the drag chute trailing space shuttle Atlantis slows the almost indistinguishable shuttle as it lands on Runway... More

CAPE CANAVERAL, Fla. -- A "towback" vehicle slowly pulls space shuttle Atlantis toward Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida. A purge unit that pumps conditioned air into a shuttle after landing is connected to Atlantis' aft end. Once inside the processing facility, Atlantis will be prepared for future public display at Kennedy's Visitor Complex.    Atlantis' final return from space at 5:57 a.m. EDT concluded the STS-135 mission, secured the space shuttle fleet's place in history and brought a close to America's Space Shuttle Program. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board were STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandra Magnus and Rex Walheim.  On the 37th shuttle mission to the International Space Station, STS-135 delivered the Raffaello multi-purpose logistics module filled with more than 9,400 pounds of spare parts, equipment and supplies that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles, and also the final mission of the Space Shuttle Program.  For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5817

CAPE CANAVERAL, Fla. -- A "towback" vehicle slowly pulls space shuttle...

CAPE CANAVERAL, Fla. -- A "towback" vehicle slowly pulls space shuttle Atlantis toward Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida. A purge unit that pumps conditioned air into a shu... More

CAPE CANAVERAL, Fla. -- Xenon lights positioned at the end of Runway 15 spotlight space shuttle Atlantis as it nears touchdown for the last time at NASA's Kennedy Space Center in Florida. Securing the space shuttle fleet's place in history, Atlantis marked the 26th nighttime landing of NASA's Space Shuttle Program and the 78th landing at Kennedy. Main gear touchdown was at 5:57:00 a.m. EDT, followed by nose gear touchdown at 5:57:20 a.m., and wheelstop at 5:57:54 a.m. On board are STS-135 Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandy Magnus and Rex Walheim.    On the 37th shuttle mission to the International Space Station, STS-135 delivered the Raffaello multi-purpose logistics module filled with more than 9,400 pounds of spare parts, equipment and supplies that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. STS-135 also was the final mission of the Space Shuttle Program.  For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Tom Farrar and Tony Gray KSC-2011-5855

CAPE CANAVERAL, Fla. -- Xenon lights positioned at the end of Runway 1...

CAPE CANAVERAL, Fla. -- Xenon lights positioned at the end of Runway 15 spotlight space shuttle Atlantis as it nears touchdown for the last time at NASA's Kennedy Space Center in Florida. Securing the space shu... More

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