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STS-133 - Public domain NASA photogrpaph

STS-119 - EOM - Public domain NASA photogrpaph

STS-127 - EOM - Public domain NASA photogrpaph

The Final Landing of STS-135 Atlantis

STS067-728-045 - STS-067 - View of ASTRO-2 payload in STS-67 Endeavour's cargo bay

STS-119 - EOM - Public domain NASA photogrpaph

STS-133 - EOM - Public domain NASA photogrpaph

S26-31-051 - STS-026 - TDRS-C deployment

S45-72-005 - STS-045 - Payload bay of Atlantis

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CAPE CANAVERAL, Fla. – As the sun rises, preparations are under way for the Shuttle Carrier Aircraft carrying space shuttle Discovery to back out of the Shuttle Landing Facility's mate-demate device at NASA’s Kennedy Space Center in Florida. The device, known as the MDD, is a large gantry-like steel structure used to hoist a shuttle off the ground and position it onto the back of the aircraft, or SCA. The SCA is a Boeing 747 jet that was originally manufactured for commercial use and modified by NASA to transport the shuttles between destinations on Earth. This SCA, designated NASA 905, is assigned to the remaining ferry missions, delivering the shuttles to their permanent public display sites. NASA 905 is scheduled to ferry Discovery to the Washington Dulles International Airport in Virginia on April 17, after which the shuttle will be placed on display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center. For more information on the SCA, visit http://www.nasa.gov/centers/dryden/news/FactSheets/FS-013-DFRC.html. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Kim Shiflett KSC-2012-2250

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, operations are under way at the mate-demate device to lift space shuttle Discovery on top of a Shuttle Carrier Aircraft. The device, known as the MDD, is a large gantry-like steel structure used to hoist a shuttle off the ground and position it onto the back of the aircraft, or SCA. The SCA is a Boeing 747 jet, originally manufactured for commercial use, which was modified by NASA to transport the shuttles between destinations on Earth. The SCA designated NASA 905 is assigned to the remaining ferry missions, delivering the shuttles to their permanent public display sites. NASA 905 is scheduled to ferry Discovery to the Washington Dulles International Airport in Virginia on April 17, after which the shuttle will be placed on display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center. For more information on the SCA, visit http://www.nasa.gov/centers/dryden/news/FactSheets/FS-013-DFRC.html. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Kim Shiflett KSC-2012-2138

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, space shuttle Discovery slowly is lifted off the ground inside the mate-demate device in preparation for the arrival of the Shuttle Carrier Aircraft. The device, known as the MDD, is a large gantry-like steel structure used to hoist a shuttle off the ground and position it onto the back of the aircraft, or SCA. The SCA is a Boeing 747 jet, originally manufactured for commercial use, which was modified by NASA to transport the shuttles between destinations on Earth. The SCA designated NASA 905 is assigned to the remaining ferry missions, delivering the shuttles to their permanent public display sites. NASA 905 is scheduled to ferry Discovery to the Washington Dulles International Airport in Virginia on April 17, after which the shuttle will be placed on display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center. For more information on the SCA, visit http://www.nasa.gov/centers/dryden/news/FactSheets/FS-013-DFRC.html. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Dimitri Gerondidakis KSC-2012-2197

CAPE CANAVERAL, Fla. – Preparations are under way just before sunrise for the Shuttle Carrier Aircraft carrying space shuttle Discovery to back out of the Shuttle Landing Facility's mate-demate device at NASA’s Kennedy Space Center in Florida. The device, known as the MDD, is a large gantry-like steel structure used to hoist a shuttle off the ground and position it onto the back of the aircraft, or SCA. The SCA is a Boeing 747 jet that was originally manufactured for commercial use and modified by NASA to transport the shuttles between destinations on Earth. This SCA, designated NASA 905, is assigned to the remaining ferry missions, delivering the shuttles to their permanent public display sites. NASA 905 is scheduled to ferry Discovery to the Washington Dulles International Airport in Virginia on April 17, after which the shuttle will be placed on display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center. For more information on the SCA, visit http://www.nasa.gov/centers/dryden/news/FactSheets/FS-013-DFRC.html. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Kim Shiflett KSC-2012-2249

CAPE CANAVERAL, Fla. – As the sun rises over the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, workers at the mate-demate device inspect space shuttle Discovery to ensure that it is ready for placement on top of a Shuttle Carrier Aircraft. The device, known as the MDD, is a large gantry-like steel structure used to hoist a shuttle off the ground and position it onto the back of the aircraft, or SCA. The SCA is a Boeing 747 jet, originally manufactured for commercial use, which was modified by NASA to transport the shuttles between destinations on Earth. The SCA designated NASA 905 is assigned to the remaining ferry missions, delivering the shuttles to their permanent public display sites. NASA 905 is scheduled to ferry Discovery to the Washington Dulles International Airport in Virginia on April 17, after which the shuttle will be placed on display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center. For more information on the SCA, visit http://www.nasa.gov/centers/dryden/news/FactSheets/FS-013-DFRC.html. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Kim Shiflett KSC-2012-2166

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, the mating of space shuttle Discovery to the Shuttle Carrier Aircraft is under way in the mate-demate device. The device, known as the MDD, is a large gantry-like steel structure used to hoist a shuttle off the ground and position it onto the back of the aircraft, or SCA. The SCA is a Boeing 747 jet, originally manufactured for commercial use, which was modified by NASA to transport the shuttles between destinations on Earth. The SCA designated NASA 905 is assigned to the remaining ferry missions, delivering the shuttles to their permanent public display sites. NASA 905 is scheduled to ferry Discovery to the Washington Dulles International Airport in Virginia on April 17, after which the shuttle will be placed on display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center. For more information on the SCA, visit http://www.nasa.gov/centers/dryden/news/FactSheets/FS-013-DFRC.html. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Kim Shiflett KSC-2012-2223

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, space shuttle Discovery is lowered onto the Shuttle Carrier Aircraft in the mate-demate device during mating operations. The device, known as the MDD, is a large gantry-like steel structure used to hoist a shuttle off the ground and position it onto the back of the aircraft, or SCA. The SCA is a Boeing 747 jet, originally manufactured for commercial use, which was modified by NASA to transport the shuttles between destinations on Earth. This SCA, designated NASA 905, is assigned to the remaining ferry missions, delivering the shuttles to their permanent public display sites. NASA 905 is scheduled to ferry Discovery to the Washington Dulles International Airport in Virginia on April 17, after which the shuttle will be placed on display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center. For more information on the SCA, visit http://www.nasa.gov/centers/dryden/news/FactSheets/FS-013-DFRC.html. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Dimitri Gerondidakis KSC-2012-2236

CAPE CANAVERAL, Fla. - At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, workers at the mate-demate device complete final preparations to lift and mate space shuttle Discovery to a Shuttle Carrier Aircraft. The device, known as the MDD, is a large gantry-like steel structure used to hoist a shuttle off the ground and position it onto the back of the aircraft, or SCA. The SCA is a Boeing 747 jet, originally manufactured for commercial use, which was modified by NASA to transport the shuttles between destinations on Earth. The SCA designated NASA 905 is assigned to the remaining ferry missions, delivering the shuttles to their permanent public display sites. NASA 905 is scheduled to ferry Discovery to the Washington Dulles International Airport in Virginia on April 17, after which the shuttle will be placed on display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center. For more information on the SCA, visit http://www.nasa.gov/centers/dryden/news/FactSheets/FS-013-DFRC.html. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Dimitri Gerondidakis KSC-2012-2176

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, the Shuttle Carrier Aircraft moves into position under space shuttle Discovery suspended 60 feet off the ground in the mate-demate device. The device, known as the MDD, is a large gantry-like steel structure used to hoist a shuttle off the ground and position it onto the back of the aircraft, or SCA. The SCA is a Boeing 747 jet, originally manufactured for commercial use, which was modified by NASA to transport the shuttles between destinations on Earth. The SCA designated NASA 905 is assigned to the remaining ferry missions, delivering the shuttles to their permanent public display sites. NASA 905 is scheduled to ferry Discovery to the Washington Dulles International Airport in Virginia on April 17, after which the shuttle will be placed on display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center. For more information on the SCA, visit http://www.nasa.gov/centers/dryden/news/FactSheets/FS-013-DFRC.html. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Kim Shiflett KSC-2012-2211

CAPE CANAVERAL, Fla. – As the sun rises, preparations are under way for the Shuttle Carrier Aircraft carrying space shuttle Discovery to back out of the Shuttle Landing Facility's mate-demate device at NASA’s Kennedy Space Center in Florida. The device, known as the MDD, is a large gantry-like steel structure used to hoist a shuttle off the ground and position it onto the back of the aircraft, or SCA. The SCA is a Boeing 747 jet that was originally manufactured for commercial use and modified by NASA to transport the shuttles between destinations on Earth. This SCA, designated NASA 905, is assigned to the remaining ferry missions, delivering the shuttles to their permanent public display sites. NASA 905 is scheduled to ferry Discovery to the Washington Dulles International Airport in Virginia on April 17, after which the shuttle will be placed on display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center. For more information on the SCA, visit http://www.nasa.gov/centers/dryden/news/FactSheets/FS-013-DFRC.html. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Kim Shiflett KSC-2012-2252

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CAPE CANAVERAL, Fla. – As the sun rises, preparations are under way for the Shuttle Carrier Aircraft carrying space shuttle Discovery to back out of the Shuttle Landing Facility's mate-demate device at NASA’s Kennedy Space Center in Florida. The device, known as the MDD, is a large gantry-like steel structure used to hoist a shuttle off the ground and position it onto the back of the aircraft, or SCA. The SCA is a Boeing 747 jet that was originally manufactured for commercial use and modified by NASA to transport the shuttles between destinations on Earth. This SCA, designated NASA 905, is assigned to the remaining ferry missions, delivering the shuttles to their permanent public display sites. NASA 905 is scheduled to ferry Discovery to the Washington Dulles International Airport in Virginia on April 17, after which the shuttle will be placed on display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center. For more information on the SCA, visit http://www.nasa.gov/centers/dryden/news/FactSheets/FS-013-DFRC.html. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Kim Shiflett

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.

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ov 103 t and r slf transition retirement discovery shuttle future exhibit kennedy space center cape canaveral sun preparations carrier aircraft shuttle carrier aircraft discovery space shuttle discovery mate demate mate demate device nasa kennedy space center mdd gantry like steel gantry like steel structure ground sca jet transport destinations earth ferry ferry missions sites display sites ferry discovery washington dulles international airport washington dulles international airport virginia smithsonian museum steven space museum steven f udvar hazy udvar hazy center centers dryden news factsheets fs transition shuttle transition retirement activities retirement activities space shuttle national air and space museum boeing 747 shuttle carrier aircraft sca high resolution space launch complex public domain aircraft photos boeing aircrafts nasa
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16/04/2012
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label_outline Explore Ov 103 T And R Slf Transition Retirement Discovery Shuttle Future Exhibit, Gantry Like Steel Structure, Gantry Like

Shuttle and 747 in the Mate-Demate Device (MDD)

CAPE CANAVERAL, Fla. – Space shuttle Endeavour is backed out of the Vehicle Assembly Building on its way to the Mate-Demate Device, or MDD, at NASA's Kennedy Space Center in Florida. The MDD is located at the Shuttle Landing Facility at Kennedy. The shuttle will be lifted and connected to the top of NASA's Shuttle Carrier Aircraft SCA, a modified 747 jetliner. The shuttle has been fitted with an aerodynamic tailcone for its flight aboard the SCA to Los Angeles where it will be placed on public display. Photo credit: NASA/Kim Shiflett KSC-2012-5063

CAPE CANAVERAL, Fla. – The front wheel of the Shuttle Carrier Aircraft transporting space shuttle Discovery to its new home rises from the runway at the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida for a takeoff at 7 a.m. EDT. The aircraft, known as an SCA, is a Boeing 747 jet, originally manufactured for commercial use, which was modified by NASA to transport the shuttles between destinations on Earth. This SCA, designated NASA 905, is assigned to the remaining ferry missions, delivering the shuttles to their permanent public display sites. NASA 905 is scheduled to ferry Discovery to the Washington Dulles International Airport in Virginia on April 17, after which the shuttle will be placed on display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center. For more information on the SCA, visit http://www.nasa.gov/centers/dryden/news/FactSheets/FS-013-DFRC.html. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Lorne Mathre KSC-2012-2396

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft, or SCA, rolls onto the ramp area at NASA Kennedy Space Center’s Shuttle Landing Facility in Florida. The SCA touched down at 5:05 p.m. EDT to prepare for shuttle Endeavour’s ferry flight to the Los Angeles International Airport on Sept. 17. The Mate/Demate Device, or MDD, is located at the ramp area and will be used to hoist and lower Endeavour onto the back of the SCA. Photo credit: NASA/Kim Shiflett KSC-2012-4958

CAPE CANAVERAL, Fla. – Space shuttle Endeavour is towed to the Mate-Demate Device, or MDD, at NASA's Kennedy Space Center in Florida after being backed out of the Vehicle Assembly Building. The MDD is located at the Shuttle Landing Facility at Kennedy. The shuttle will be lifted and connected to the top of NASA's Shuttle Carrier Aircraft SCA, a modified 747 jetliner. The shuttle has been fitted with an aerodynamic tailcone for its flight aboard the SCA to Los Angeles where it will be placed on public display. Photo credit: NASA/Kim Shiflett KSC-2012-5133

CAPE CANAVERAL, Fla. – Space shuttle Discovery makes its way in darkness along the access road to the Shuttle Landing Facility, or SLF, at NASA’s Kennedy Space Center in Florida. A tail cone has been installed over its three replica shuttle main engines to reduce aerodynamic drag and turbulence during its upcoming ferry flight. At the SLF, Discovery will be hoisted onto a Shuttle Carrier Aircraft, or SCA, with the aid of a mate-demate device. The SCA, a modified Boeing 747 jet airliner, is scheduled to ferry Discovery to the Washington Dulles International Airport in Virginia on April 17, after which the shuttle will be placed on permanent public display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Tim Jacobs KSC-2012-2072

CAPE CANAVERAL, Fla. – Space shuttle Discovery is towed into position next to the mate-demate device, or MDD, at the Shuttle Landing Facility, or SLF, at NASA’s Kennedy Space Center in Florida. A tail cone has been installed over its three replica shuttle main engines to reduce aerodynamic drag and turbulence during its upcoming ferry flight. The MDD is a large gantry-like steel structure used to hoist a shuttle off the ground and position it onto the back of a Shuttle Carrier Aircraft, or SCA. The SCA is a Boeing 747 jet, originally manufactured for commercial use, which was modified by NASA to transport the shuttles between destinations on Earth. The SCA designated NASA 905 is assigned to the remaining ferry missions, delivering the shuttles to their permanent public display sites. Discovery’s new home will be the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Chantilly, Va. For more information on the SCA, visit http://www.nasa.gov/centers/dryden/news/FactSheets/FS-013-DFRC.html. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Dimitri Gerondidakis KSC-2012-2101

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, vigilant workers monitor space shuttle Discovery as it is lifted off the ground into the mate-demate device. Operations are under way to position Discovery on top of a Shuttle Carrier Aircraft in preparation for its departure from Kennedy on Tuesday. The device, known as the MDD, is a large gantry-like steel structure used to hoist a shuttle off the ground and position it onto the back of the aircraft, or SCA. The SCA is a Boeing 747 jet, originally manufactured for commercial use, which was modified by NASA to transport the shuttles between destinations on Earth. The SCA designated NASA 905 is assigned to the remaining ferry missions, delivering the shuttles to their permanent public display sites. NASA 905 is scheduled to ferry Discovery to the Washington Dulles International Airport in Virginia on April 17, after which the shuttle will be placed on display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center. For more information on the SCA, visit http://www.nasa.gov/centers/dryden/news/FactSheets/FS-013-DFRC.html. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Kim Shiflett KSC-2012-2157

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, media representatives are on hand as space shuttle Discovery is lifted 60 feet off the ground inside the mate-demate device in preparation for the arrival of the Shuttle Carrier Aircraft. The device, known as the MDD, is a large gantry-like steel structure used to hoist a shuttle off the ground and position it onto the back of the aircraft, or SCA. The SCA is a Boeing 747 jet, originally manufactured for commercial use, which was modified by NASA to transport the shuttles between destinations on Earth. The SCA designated NASA 905 is assigned to the remaining ferry missions, delivering the shuttles to their permanent public display sites. NASA 905 is scheduled to ferry Discovery to the Washington Dulles International Airport in Virginia on April 17, after which the shuttle will be placed on display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center. For more information on the SCA, visit http://www.nasa.gov/centers/dryden/news/FactSheets/FS-013-DFRC.html. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Tim Jacobs KSC-2012-2189

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, STS-133 Mission Specialists Nicole Stott and Michael Barratt pose for a photographer in front of a Shuttle Carrier Aircraft on which space shuttle Discovery has been secured for departure. Stott and Barratt were members of the crew to fly on Discovery’s final mission in February and March 2011. Other members of the STS-133 crew were Commander Steve Lindsey, Pilot Eric Boe, and Mission Specialists Alvin Drew and Steve Bowen. Discovery is scheduled to depart from Kennedy for the final time tomorrow morning. Also known as an SCA, the aircraft is a Boeing 747 jet, originally manufactured for commercial use, which was modified by NASA to transport the shuttles between destinations on Earth. The SCA designated NASA 905 is assigned to the remaining ferry missions, delivering the shuttles to their permanent public display sites. NASA 905 is scheduled to ferry Discovery to the Washington Dulles International Airport in Virginia on April 17, after which the shuttle will be placed on display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center. For more information on the SCA, visit http://www.nasa.gov/centers/dryden/news/FactSheets/FS-013-DFRC.html. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Tim Jacobs KSC-2012-2296

CAPE CANAVERAL, Fla. – This is an aerial view of space shuttle Discovery bolted to the top of a Shuttle Carrier Aircraft SCA on the ramp of the Shuttle Landing Facility SLF at NASA’s Kennedy Space Center in Florida. Also on the ramp is a pair of T-38 training jets. Discovery's last crew members are expected to be at the SLF, along with Kennedy employees and guests, as the center says goodbye to the agency's most-flown shuttle on April 17. The SCA, designated NASA 905, will ferry Discovery to the Washington Dulles International Airport in Virginia, after which the shuttle will be moved for public display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center on April 19. For more information on the SCA, visit http://www.nasa.gov/centers/dryden/news/FactSheets/FS-013-DFRC.html. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Kim Shiflett KSC-2012-2302

CAPE CANAVERAL, Fla. – This is an aerial view of space shuttle Discovery bolted to the top of a Shuttle Carrier Aircraft SCA on the ramp of the Shuttle Landing Facility SLF at NASA’s Kennedy Space Center in Florida. Discovery's last crew members are expected to be at the SLF, along with Kennedy employees and guests, as the center says goodbye to the agency's most-flown shuttle on April 17. The SCA, designated NASA 905, will ferry Discovery to the Washington Dulles International Airport in Virginia, after which the shuttle will be moved for public display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center on April 19. For more information on the SCA, visit http://www.nasa.gov/centers/dryden/news/FactSheets/FS-013-DFRC.html. For more information on shuttle transition and retirement activities, visit http://www.nasa.gov/transition. Photo credit: NASA/Kim Shiflett KSC-2012-2305

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ov 103 t and r slf transition retirement discovery shuttle future exhibit kennedy space center cape canaveral sun preparations carrier aircraft shuttle carrier aircraft discovery space shuttle discovery mate demate mate demate device nasa kennedy space center mdd gantry like steel gantry like steel structure ground sca jet transport destinations earth ferry ferry missions sites display sites ferry discovery washington dulles international airport washington dulles international airport virginia smithsonian museum steven space museum steven f udvar hazy udvar hazy center centers dryden news factsheets fs transition shuttle transition retirement activities retirement activities space shuttle national air and space museum boeing 747 shuttle carrier aircraft sca high resolution space launch complex public domain aircraft photos boeing aircrafts nasa