KENNEDY SPACE CENTER, Fla. -- The early morning sun falls on Launch Pad 39A and Space Shuttle Discovery, which is waiting for launch on mission STS-92 Oct. 5, 2000. Leading to the pad (from the foreground) is the ramp leading from the crawlerway, the specially built road that provides the Shuttles access to the pads from the Vehicle Assembly Building. At the right of the pad is the 300,000-gallon water tank that is part of the sound suppression system during launches. Beyond is the Atlantic Ocean. At the far left can be seen Launch Pad 39B with its water tank KSC-00pp1298

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Latest Overall Look of Pad 39A. NASA public domain image. Kennedy space center.

The STS-95 Space Shuttle Discovery sits on the Mobile Launch Platform, still atop the crawler transporter, at Launch Pad 39B. To its left is the Fixed Service Structure that provides access to the orbiter and the Rotating Service Structure. To its right is the elevated water tank, with a capacity of 300,000 gallons. Part of the sound suppression water system, the tank stands 290 feet high on the northeast side of the pad. Water from the tank is released just before ignition of the orbiter's three main engines and twin solid rocket boosters. The entire system reduces the acoustical levels within the orbiter's payload bay to an acceptable 142 decibels. Beyond the orbiter is seen the Atlantic Ocean. While at the launch pad, the orbiter, external tank and solid rocket boosters will undergo final preparations for the launch, scheduled to lift off Oct. 29. The mission includes research payloads such as the Spartan solar-observing deployable spacecraft, the Hubble Space Telescope Orbital Systems Test Platform, the International Extreme Ultraviolet Hitchhiker, as well as the SPACEHAB single module with experiments on space flight and the aging process KSC-98pc1110

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, this aerial view taken from atop the Vehicle Assembly Building shows the mobile launcher (ML) as it begins its move aboard a crawler-transporter from next to Kennedy's Vehicle Assembly Building to Launch Pad 39B, a distance of 4.2 miles. Data on the ML will be collected from structural and functional engineering tests and used for the next phases of construction. The 355-foot-tall ML structure, which took about two years to construct, is being modified to support NASA’s Space Launch System (SLS), the heavy-lift rocket that will launch astronauts farther into space than ever before. SLS will also create high-quality jobs here at home, and provide the cornerstone for America's future human space exploration efforts. Photo credit: NASA/Kim Shiflett KSC-2011-7789

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Dimitri Gerondidakis KSC-2012-6208

ML - First motion and beginning of roll of the ML to Pad 39B 2011-7789

KENNEDY SPACE CENTER, Fla. -- The early morning sun falls on Launch Pad 39A and Space Shuttle Discovery, which is waiting for launch on mission STS-92 Oct. 5, 2000. Leading to the pad (from the foreground) is the ramp leading from the crawlerway, the specially built road that provides the Shuttles access to the pads from the Vehicle Assembly Building. At the right of the pad is the 300,000-gallon water tank that is part of the sound suppression system during launches. Beyond is the Atlantic Ocean. At the far left can be seen Launch Pad 39B with its water tank KSC-00pp1298

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KENNEDY SPACE CENTER, Fla. -- The early morning sun falls on Launch Pad 39A and Space Shuttle Discovery, which is waiting for launch on mission STS-92 Oct. 5, 2000. Leading to the pad (from the foreground) is the ramp leading from the crawlerway, the specially built road that provides the Shuttles access to the pads from the Vehicle Assembly Building. At the right of the pad is the 300,000-gallon water tank that is part of the sound suppression system during launches. Beyond is the Atlantic Ocean. At the far left can be seen Launch Pad 39B with its water tank

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.