CAPE CANAVERAL, Fla. -- This overhead view shows the Space Shuttle Program's last external fuel tank, ET-122 (right), as it is being transported to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. The tank traveled 900 miles by sea, carried in the Pegasus Barge, from NASA's Michoud Assembly Facility in New Orleans. Once inside the VAB, it eventually will be attached to space shuttle Endeavour for the STS-134 mission to the International Space Station targeted to launch Feb. 2011. STS-134 currently is scheduled to be the last mission in the shuttle program. The tank, which is the largest element of the space shuttle stack, was damaged during Hurricane Katrina in August 2005 and restored to flight configuration by Lockheed Martin Space Systems Company employees. Photo credit: NASA/Kevin O'Connell KSC-2010-4907

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Tour buses unload passengers at a new stop on the KSC tour that allows visitors to view Pad LC-39B. The tour road runs parallel to the crawlerway (just out of sight) that is used to transport the Space Shuttle vehicles to the pad. The length of the crawlerway from the Vehicle Assembly Building to Pad B is 6,828 meters (22,440 ft); its width overall is 40 meters (130 ft); each lane is 12 meters (40ft) with a 15-meter (50ft) median. This view looks south KSC-98pc1055

CAPE CANAVERAL, Fla. -- An aerial view near NASA's Kennedy Space Center Visitor Complex reveals the Orion crew module, enclosed in its crew module transportation fixture and secured on a flatbed truck that is preparing to pull onto the NASA Causeway that leads to the entrance gate to Kennedy Space Center in Florida. Orion made the 2,700 mile overland trip from Naval Base San Diego in California. The spacecraft was recovered from the Pacific Ocean after completing a two-orbit, four-and-a-half hour mission Dec. 5 to test systems critical to crew safety, including the launch abort system, the heat shield and the parachute system. The Ground Systems Development and Operations Program led the recovery, offload and transportation efforts. For more information, visit www.nasa.gov/orion. Photo credit: NASA/Kim Shiflett KSC-2014-4839

Sailors aboard the amphibious transport dock ship

Sailors aboard the amphibious transport dock ship Pre-Commissioning Unit (PCU) San Diego (LPD 22) watch as the ship enters Gatun locks

CAPE CANAVERAL, Fla. -- An aerial view reveals the Orion crew module, enclosed in its crew module transportation fixture and secured on a flatbed truck that is proceeding along the NASA Causeway at Kennedy Space Center in Florida. In the background is the iconic Vehicle Assembly Building. Orion made the 2,700 mile overland trip from Naval Base San Diego in California. The spacecraft was recovered from the Pacific Ocean after completing a two-orbit, four-and-a-half hour mission Dec. 5 to test systems critical to crew safety, including the launch abort system, the heat shield and the parachute system. The Ground Systems Development and Operations Program led the recovery, offload and transportation efforts. For more information, visit www.nasa.gov/orion. Photo credit: NASA/Kim Shiflett KSC-2014-4847

CAPE CANAVERAL, Fla. -- This overhead view shows the Space Shuttle Program's last external fuel tank, ET-122 (right), as it is being transported to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. The tank traveled 900 miles by sea, carried in the Pegasus Barge, from NASA's Michoud Assembly Facility in New Orleans. Once inside the VAB, it eventually will be attached to space shuttle Endeavour for the STS-134 mission to the International Space Station targeted to launch Feb. 2011. STS-134 currently is scheduled to be the last mission in the shuttle program. The tank, which is the largest element of the space shuttle stack, was damaged during Hurricane Katrina in August 2005 and restored to flight configuration by Lockheed Martin Space Systems Company employees. Photo credit: NASA/Kevin O'Connell KSC-2010-4907

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Summary

CAPE CANAVERAL, Fla. -- This overhead view shows the Space Shuttle Program's last external fuel tank, ET-122 (right), as it is being transported to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. The tank traveled 900 miles by sea, carried in the Pegasus Barge, from NASA's Michoud Assembly Facility in New Orleans. Once inside the VAB, it eventually will be attached to space shuttle Endeavour for the STS-134 mission to the International Space Station targeted to launch Feb. 2011. STS-134 currently is scheduled to be the last mission in the shuttle program. The tank, which is the largest element of the space shuttle stack, was damaged during Hurricane Katrina in August 2005 and restored to flight configuration by Lockheed Martin Space Systems Company employees. Photo credit: NASA/Kevin O'Connell

Space Shuttle Program

The Space Shuttle program was the United States government's manned launch vehicle program from 1981 to 2011, administered by NASA and officially beginning in 1972. The Space Shuttle system—composed of an orbiter launched with two reusable solid rocket boosters and a disposable external fuel tank— carried up to eight astronauts and up to 50,000 lb (23,000 kg) of payload into low Earth orbit (LEO). When its mission was complete, the orbiter would re-enter the Earth's atmosphere and lands as a glider. Although the concept had been explored since the late 1960s, the program formally commenced in 1972 and was the focus of NASA's manned operations after the final Apollo and Skylab flights in the mid-1970s. It started with the launch of the first shuttle Columbia on April 12, 1981, on STS-1. and finished with its last mission, STS-135 flown by Atlantis, in July 2011.