CAPE CANAVERAL, Fla. – Space shuttle Discovery is towed along the access road to the Shuttle Landing Facility, or SLF, before dawn at NASA’s Kennedy Space Center in Florida. Its move from the Vehicle Assembly Building got under way at 5 a.m. EDT. 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/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Rain begins to fall on space shuttle Discovery as it says good-bye to NASA Kennedy Space Center’s Launch Complex 39 area for the final time. Discovery is on its way from the Vehicle Assembly Building’s high bay 4 to the Shuttle Landing Facility, or SLF. 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/Kim Shiflett

CAPE CANAVERAL, Fla. – Space shuttle Discovery rolls into position beneath 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

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2, or OPF-2, at NASA's Kennedy Space Center in Florida, work platforms fold away from space shuttle Discovery for its move to the Vehicle Assembly Building, or VAB. Discovery will be stored inside the VAB for approximately one month while shuttle Atlantis undergoes processing in OPF-2 following its final mission, STS-135. Discovery flew its 39th and final mission, STS-133, in February and March 2011, and currently is being prepared for public display at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Virginia. For more information about Discovery's Transition and Retirement, visit www.nasa.gov/mission_pages/shuttle/launch/discovery_rss_collection_archive_1.html. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – Painted graphics line the side of NASA 905 depicting the various ferry flights the Shuttle Carrier Aircraft has supported during the Space Shuttle Program, including the tests using the space shuttle prototype Enterprise. The aircraft, known as an SCA, will ferry space shuttle Discovery to the Washington Dulles International Airport in Sterling, Va., on April 17. The SCA is a modified Boeing 747 jet airliner, originally manufactured for commercial use. One of two SCAs employed over the course of the Space Shuttle Program, NASA 905 is assigned to the remaining ferry missions, delivering the shuttles to their permanent public display sites. NASA 911 was decommissioned at the NASA Dryden Flight Research Center in California in February. Discovery will be placed on permanent public display in 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/shuttle. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2, or OPF-2, at NASA's Kennedy Space Center in Florida, workers prepare to tow space shuttle Discovery to the Vehicle Assembly Building, or VAB. Protective plastic covers the nose of Discovery where its forward reaction control system (FRCS) once resided. Discovery's FRCS was removed and shipped to White Sands Space Harbor in New Mexico for a full cleaning and deservicing before it is returned to Kennedy and reinstalled. Discovery will be stored inside the VAB for approximately one month while shuttle Atlantis undergoes processing in OPF-2 following its final mission, STS-135. Discovery flew its 39th and final mission, STS-133, in February and March 2011, and currently is being prepared for public display at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Virginia. For more information about Discovery's Transition and Retirement, visit www.nasa.gov/mission_pages/shuttle/launch/discovery_rss_collection_archive_1.html. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Space shuttle Discovery, mounted to a Shuttle Carrier Aircraft, soars over the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. The duo is beginning their 3 1/2 hour ferry flight to the Washington Dulles International Airport in Virginia. Also flying along with the pair is a T-38 training jet. Discovery is leaving Kennedy after more than 28 years of service beginning with its arrival on the space coast Nov. 9, 1983. Discovery first launched to space Aug. 30, 1984, on the STS-41D mission. Discovery is the agency's most-flown shuttle with 39 missions, more than 148 million miles and a total of one year in space. Discovery is set to move to the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center on April 19 where it will be placed on public display. 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/Frankie Martin

CAPE CANAVERAL, Fla. – Space shuttle Discovery, mounted to a Shuttle Carrier Aircraft, takes off from the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. The duo is beginning their 3 1/2 hour ferry flight to the Washington Dulles International Airport in Virginia. Discovery is leaving Kennedy after more than 28 years of service beginning with its arrival on the space coast Nov. 9, 1983. Discovery first launched to space Aug. 30, 1984, on the STS-41D mission. Discovery is the agency's most-flown shuttle with 39 missions, more than 148 million miles and a total of one year in space. Discovery is set to move to the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center on April 19 where it will be placed on public display. 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/Jim Grossmann

CAPE CANAVERAL, Fla. – Space shuttle Discovery, mounted to a Shuttle Carrier Aircraft, prepares for takeoff on the runway of the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. The duo is set to begin their 3 1/2 hour ferry flight to the Washington Dulles International Airport in Virginia at about 7 a.m. EDT. Above the two craft is a NASA helicopter covering the departure. Discovery is leaving Kennedy after more than 28 years of service beginning with its arrival on the space coast Nov. 9, 1983. Discovery first launched to space Aug. 30, 1984, on the STS-41D mission. Discovery is the agency's most-flown shuttle with 39 missions, more than 148 million miles and a total of one year in space. Discovery is set to move to the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center on April 19 where it will be placed on public display. 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/Frankie Martin

CAPE CANAVERAL, Fla. – Space shuttle Discovery, mounted to a Shuttle Carrier Aircraft, slowly rolls along the runway of the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. The duo is set to begin their 3 1/2 hour ferry flight to the Washington Dulles International Airport in Virginia at about 7 a.m. EDT. Above the two craft is a NASA helicopter covering the departure. Discovery is leaving Kennedy after more than 28 years of service beginning with its arrival on the space coast Nov. 9, 1983. Discovery first launched to space Aug. 30, 1984, on the STS-41D mission. Discovery is the agency's most-flown shuttle with 39 missions, more than 148 million miles and a total of one year in space. Discovery is set to move to the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center on April 19 where it will be placed on public display. 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/Frankie Martin

CAPE CANAVERAL, Fla. – Space shuttle Discovery is towed into position at the mate-demate device, or MDD, at the Shuttle Landing Facility, or SLF, at NASA’s Kennedy Space Center in Florida. At the SLF, Discovery will be secured on the back of the Shuttle Carrier Aircraft, or SCA. The MDD is a large gantry-like steel structure used to hoist a shuttle off the ground and position it onto the back of an 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/Kim Shiflett

CAPE CANAVERAL, Fla. – Preparations are under way at the the mate-demate device, or MDD, at the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida to lift space shuttle Discovery atop a Shuttle Carrier Aircraft, or SCA. The MDD is a large gantry-like steel structure used to hoist a shuttle off the ground and position it onto the back of an 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

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, workers secure a sling to space shuttle Discovery in order to lift it onto the top of a Shuttle Carrier Aircraft with the aid of 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/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft transporting space shuttle Discovery flies over the Vertical Integration Facility at Space Launch Complex-41 on Cape Canaveral Air Force Station after taking off from Kennedy Space Center’s Shuttle Landing Facility at 7 a.m. EDT. The duo are heading south to fly over Brevard County’s beach communities, offering residents the opportunity to see the shuttle before it leaves the Space Coast for the last time. 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

CAPE CANAVERAL, Fla. – Space shuttle Discovery, mounted to a Shuttle Carrier Aircraft, takes off from the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. The duo is beginning their 3 1/2 hour ferry flight to the Washington Dulles International Airport in Virginia. Also flying along with the pair is a T-38 training jet. Discovery is leaving Kennedy after more than 28 years of service beginning with its arrival on the space coast Nov. 9, 1983. Discovery first launched to space Aug. 30, 1984, on the STS-41D mission. Discovery is the agency's most-flown shuttle with 39 missions, more than 148 million miles and a total of one year in space. Discovery is set to move to the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center on April 19 where it will be placed on public display. 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/Frankie Martin

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft transporting space shuttle Discovery to its new home departs from NASA’s Kennedy Space Center in Florida at 7 a.m. EDT accompanied by a T-38 jet. The duo are heading south to fly over Brevard County’s beach communities for residents to get a look at the shuttle before it leaves the Space Coast for the last time. 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

CAPE CANAVERAL, Fla. – Sunrise over the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida reveals the Shuttle Carrier Aircraft that is transporting space shuttle Discovery to its new home preparing for takeoff. 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/Rusty Backer

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft transporting space shuttle Discovery flies over the hangars in the Industrial Area on Cape Canaveral Air Force Station after taking off from Kennedy Space Center’s Shuttle Landing Facility at 7 a.m. EDT. The duo are heading south to fly over Brevard County’s beach communities, offering residents the opportunity to see the shuttle before it leaves the Space Coast for the last time. 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

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, the Shuttle Carrier Aircraft transporting space shuttle Discovery to its new home lifts off the runway at 7 a.m. EDT just after daybreak. 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/Rusty Backer

CAPE CANAVERAL, Fla. - Dawn breaks at NASA's Kennedy Space Center in Florida, revealing the Shuttle Carrier Aircraft and its piggybacked cargo, space shuttle Discovery, rolling down runway 15 toward an on-time takeoff at 7 a.m. EDT. The duo is beginning its ferry flight to the Washington Dulles International Airport in Virginia that also includes a flyby of the Space Coast and Washington, D.C. Discovery is leaving Kennedy after more than 28 years of service beginning with its arrival on the space coast Nov. 9, 1983. Discovery is set to move to the Smithsonian's National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va., on April 19 where it will be placed on public display. For more information on the Shuttle Carrier Aircraft, 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 Powers and Tim Terry

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, workers "spotting" for space shuttle Discovery as it rolls from Orbiter Processing Facility-2, or OPF-2, to the Vehicle Assembly Building, or VAB, take refuge from the sun beneath the shuttle. Discovery will be stored inside the VAB for approximately one month while shuttle Atlantis undergoes processing in OPF-2 following its final mission, STS-135. Discovery flew its 39th and final mission, STS-133, in February and March 2011, and currently is being prepared for public display at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Virginia. For more information about Discovery's Transition and Retirement, visit www.nasa.gov/mission_pages/shuttle/launch/discovery_rss_collection_archive_1.html. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – Space shuttle Discovery rolls into position beside 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

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft transporting space shuttle Discovery to its new home taxis down the runway past the Vehicle Assembly Building as day breaks over the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida. In the background at left is NASA’s new mobile launcher. The duo will fly south over Brevard County’s beach communities for residents to get a look at the shuttle before it leaves the Space Coast for the last time. 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/Tim Powers and Rick Wetherington

CAPE CANAVERAL, Fla. – CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, preparations are under way to lift space shuttle Discovery with 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 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. 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

CAPE CANAVERAL, Fla. – Space shuttle Discovery backs out of the Vehicle Assembly Building, or VAB, at NASA’s Kennedy Space Center in Florida, for its trip to the Shuttle Landing Facility, or SLF. Discovery was in storage in the VAB’s high bay 4 awaiting departure from Kennedy’s Launch Complex 39 area for the final time. 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 transport 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/Kim Shiflett

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, the camera view from under the Shuttle Carrier Aircraft finds space shuttle Discovery at the mate-demate device, in the distance. Operations are under way to lift Discovery on top of the 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 Shiflet

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft transporting space shuttle Discovery to its new home taxis down the runway past the mate/demate device as day breaks over the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida. The duo will fly south over Brevard County’s beach communities for residents to get a look at the shuttle before it leaves the Space Coast for the last time. 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/Tim Powers and Rick Wetherington

CAPE CANAVERAL, Fla. – Space shuttle Discovery rolls into position beneath the mate-demate device, or MDD, at the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida. 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/Tim Jacobs

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, space shuttle Discovery is towed from Orbiter Processing Facility-2, or OPF-2, to the Vehicle Assembly Building, or VAB. Railings, called strongbacks, are installed along Discovery's payload bay doors to assist with opening and closing of the doors when the shuttle's hydraulic system is not operational and support the doors while they are open. Discovery will be stored inside the VAB for approximately one month while shuttle Atlantis undergoes processing in OPF-2 following its final mission, STS-135. Discovery flew its 39th and final mission, STS-133, in February and March 2011, and currently is being prepared for public display at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Virginia. For more information about Discovery's Transition and Retirement, visit www.nasa.gov/mission_pages/shuttle/launch/discovery_rss_collection_archive_1.html. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft transporting space shuttle Discovery to its new home taxis down the runway as day breaks over the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida. The duo will fly south over Brevard County’s beach communities for residents to get a look at the shuttle before it leaves the Space Coast for the last time. 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/Tim Powers and Rick Wetherington

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, space shuttle Discovery -- its nose encased in protective plastic, its cockpit windows covered, and strongbacks attached to its payload bay doors -- rolls out of Orbiter Processing Facility-2, or OPF-2, on its move to the Vehicle Assembly Building, or VAB. Discovery will be stored inside the VAB for approximately one month while shuttle Atlantis undergoes processing in OPF-2 following its final mission, STS-135. Discovery flew its 39th and final mission, STS-133, in February and March 2011, and currently is being prepared for public display at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Virginia. For more information about Discovery's Transition and Retirement, visit www.nasa.gov/mission_pages/shuttle/launch/discovery_rss_collection_archive_1.html. Photo credit: NASA/Ken Thornsley

CAPE CANAVERAL, Fla. – A Shuttle Carrier Aircraft, or SCA, is readied for mating with the space shuttle Discovery at the Shuttle Landing Facility, or SLF, at NASA’s Kennedy Space Center in Florida. This SCA, designated NASA 905, is a Boeing 747 jet originally manufactured for commercial use, which was modified by NASA to transport the shuttles between destinations on Earth. 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/Kim Shiflett

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, the camera captures a last look at space shuttle Discovery’s payload bay before its payload bay doors are closed for the final time during Space Shuttle Program transition and retirement activities. Following the door closure, the vehicle will be powered down for the last time. Discovery is being prepared for public display at the Smithsonian’s National Air and Space Museum Steven F. Udvar-Hazy Center in Chantilly, Va., in 2012. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. - With space shuttle Discovery secured to its back, the Shuttle Carrier Aircraft is positioned for takeoff at the north end of runway 15 at NASA's Kennedy Space Center in Florida. The duo departed Kennedy 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 carried 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 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/Rusty Backer

CAPE CANAVERAL, Fla. – Preparations are under way to lift space shuttle Discovery onto the back of this Shuttle Carrier Aircraft, or SCA, at the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida. Designated NASA 905, 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. 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/Tim Jacobs

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, space shuttle Discovery -- its nose encased in protective plastic, its cockpit windows covered, and strongbacks attached to its payload bay doors -- rolls past the Thermal Protection System Facility, at right, on its way from Orbiter Processing Facility-2, or OPF-2, to the Vehicle Assembly Building, or VAB. Discovery will be stored inside the VAB for approximately one month while shuttle Atlantis undergoes processing in OPF-2 following its final mission, STS-135. Discovery flew its 39th and final mission, STS-133, in February and March 2011, and currently is being prepared for public display at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Virginia. For more information about Discovery's Transition and Retirement, visit www.nasa.gov/mission_pages/shuttle/launch/discovery_rss_collection_archive_1.html. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, space shuttle Discovery finds shelter in the Vehicle Assembly Building, or VAB, after rolling from Orbiter Processing Facility-2, or OPF-2. Discovery will be stored inside the VAB for approximately one month while shuttle Atlantis undergoes processing in OPF-2 following its final mission, STS-135. Discovery flew its 39th and final mission, STS-133, in February and March 2011, and currently is being prepared for public display at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Virginia. For more information about Discovery's Transition and Retirement, visit www.nasa.gov/mission_pages/shuttle/launch/discovery_rss_collection_archive_1.html. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – Space shuttle Discovery, mounted to a Shuttle Carrier Aircraft, slowly rolls along the runway of the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. The duo is set to begin their 3 1/2 hour ferry flight to the Washington Dulles International Airport in Virginia at about 7 a.m. EDT. Above the two craft is a NASA helicopter covering the departure. Discovery is leaving Kennedy after more than 28 years of service beginning with its arrival on the space coast Nov. 9, 1983. Discovery first launched to space Aug. 30, 1984, on the STS-41D mission. Discovery is the agency's most-flown shuttle with 39 missions, more than 148 million miles and a total of one year in space. Discovery is set to move to the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center on April 19 where it will be placed on public display. 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/Jim Grossmann

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, protective plastic covers the nose of space shuttle Discovery where its forward reaction control system (FRCS) once resided as it rolls from Orbiter Processing Facility-2, or OPF-2, to the Vehicle Assembly Building, or VAB. Discovery's FRCS was removed and shipped to White Sands Space Harbor in New Mexico for a full cleaning and deservicing before it is returned to Kennedy and reinstalled. Discovery will be stored inside the VAB for approximately one month while shuttle Atlantis undergoes processing in OPF-2 following its final mission, STS-135. Discovery flew its 39th and final mission, STS-133, in February and March 2011, and currently is being prepared for public display at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Virginia. For more information about Discovery's Transition and Retirement, visit www.nasa.gov/mission_pages/shuttle/launch/discovery_rss_collection_archive_1.html. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – Buses line the parking lot beside the control tower at the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida. Kennedy employees and guests were on hand at 7 a.m. EDT to witness the departure of the Shuttle Carrier Aircraft transporting space shuttle Discovery to its new home. 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 today, 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/Glenn Benson

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, preparations are under way to lift space shuttle Discovery atop the Shuttle Carrier Aircraft, in the background, with the aid of 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/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, space shuttle Discovery rolls along the towway from Orbiter Processing Facility-2, or OPF-2, to the Vehicle Assembly Building, or VAB. Railings, called strongbacks, are installed along Discovery's payload bay doors to assist with opening and closing of the doors when the shuttle's hydraulic system is not operational and support the doors while they are open. Discovery will be stored inside the VAB for approximately one month while shuttle Atlantis undergoes processing in OPF-2 following its final mission, STS-135. Discovery flew its 39th and final mission, STS-133, in February and March 2011, and currently is being prepared for public display at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Virginia. For more information about Discovery's Transition and Retirement, visit www.nasa.gov/mission_pages/shuttle/launch/discovery_rss_collection_archive_1.html. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – Space shuttle Discovery, mounted to a Shuttle Carrier Aircraft, slowly rolls along the runway of the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. The duo is set to begin their 3 1/2 hour ferry flight to the Washington Dulles International Airport in Virginia at about 7 a.m. EDT. Above the two craft is a NASA helicopter covering the departure. Discovery is leaving Kennedy after more than 28 years of service beginning with its arrival on the space coast Nov. 9, 1983. Discovery first launched to space Aug. 30, 1984, on the STS-41D mission. Discovery is the agency's most-flown shuttle with 39 missions, more than 148 million miles and a total of one year in space. Discovery is set to move to the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center on April 19 where it will be placed on public display. 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/Frankie Martin

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft transporting space shuttle Discovery to its new home flies over NASA Kennedy Space Center’s Industrial Area after taking off from the Shuttle Landing Facility at 7 a.m. EDT. The blue building in the foreground is the Assembly and Rotation Facility. The duo are heading south to fly over Brevard County’s beach communities for residents to get a look at the shuttle before it leaves the Space Coast for the last time. 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

CAPE CANAVERAL, Fla. – Sunrise over the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida reveals the Shuttle Carrier Aircraft that is transporting space shuttle Discovery to its new home preparing for takeoff. 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/Rusty Backer

CAPE CANAVERAL, Fla. -- Outside Orbiter Processing Facility-2, or OPF-2, at NASA's Kennedy Space Center in Florida, media on hand to cover the move of space shuttle Discovery to the Vehicle Assembly Building, or VAB, are given the opportunity to interview Stephanie Stilson, Transition and Retirement orbiter flow director. Discovery will be stored inside the VAB for approximately one month while shuttle Atlantis undergoes processing in OPF-2 following its final mission, STS-135. Discovery flew its 39th and final mission, STS-133, in February and March 2011, and currently is being prepared for public display at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Virginia. For more information about Discovery's Transition and Retirement, visit www.nasa.gov/mission_pages/shuttle/launch/discovery_rss_collection_archive_1.html. Photo credit: NASA/Ken Thornsley

CAPE CANAVERAL, Fla. – A NASA C-9 “Pathfinder” DC-9 prepares for takeoff from the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida ahead of space shuttle Discovery, which is bolted to the top of a Shuttle Carrier Aircraft. The craft are set to begin their 3 1/2 hour ferry flight to the Washington Dulles International Airport in Virginia at about 7 a.m. EDT. The Pathfinder will fly about 100 miles ahead of the attached pair, making sure the flight path is free of harmful weather or hazardous conditions. Discovery is leaving Kennedy after more than 28 years of service beginning with its arrival on the space coast Nov. 9, 1983. Discovery first launched to space Aug. 30, 1984, on the STS-41D mission. Discovery is the agency's most-flown shuttle with 39 missions, more than 148 million miles and a total of one year in space. Discovery is set to move to the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center on April 19 where it will be placed on public display. 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/Jim Grossmann

CAPE CANAVERAL, Fla. – Daybreak at the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida finds the Shuttle Carrier Aircraft that is transporting space shuttle Discovery to its new home taxiing down the runway, preparing for takeoff. 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/Rusty Backer

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

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, the tail mast of space shuttle Discovery looms above the openings for its space shuttle main engines, long since removed, as it approaches the Vehicle Assembly Building, or VAB, at right, on its trek from Orbiter Processing Facility-2, or OPF-2. Discovery will be stored inside the VAB for approximately one month while shuttle Atlantis undergoes processing in OPF-2 following its final mission, STS-135. Discovery flew its 39th and final mission, STS-133, in February and March 2011, and currently is being prepared for public display at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Virginia. For more information about Discovery's Transition and Retirement, visit www.nasa.gov/mission_pages/shuttle/launch/discovery_rss_collection_archive_1.html. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft transporting space shuttle Discovery shares the sky with a flock of seagulls as it flies over Cocoa Beach just after sunrise, giving Brevard County residents the opportunity to see the shuttle for the last time before it leaves the Space Coast for its new home. 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 ferrying Discovery to the Washington Dulles International Airport in Virginia today, after which the shuttle will be placed on display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center around 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/R. D. Lee

CAPE CANAVERAL, Fla. – Space shuttle Discovery, mounted to a Shuttle Carrier Aircraft, soars over the Merritt Island National Wildlife Refuge and NASA's Kennedy Space Center in Florida. The duo is beginning their 3 1/2 hour ferry flight to the Washington Dulles International Airport in Virginia. Also flying along with the pair is a T-38 training jet. Discovery is leaving Kennedy after more than 28 years of service beginning with its arrival on the space coast Nov. 9, 1983. Discovery first launched to space Aug. 30, 1984, on the STS-41D mission. Discovery is the agency's most-flown shuttle with 39 missions, more than 148 million miles and a total of one year in space. Discovery is set to move to the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center on April 19 where it will be placed on public display. 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/Frankie Martin

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Discovery makes its way along the access road past the hangar at the Shuttle Landing Facility, or SLF, in darkness. Its move got under way at 5 a.m. EDT. 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/Jim Grossmann

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, space shuttle Discovery -- its nose encased in protective plastic, its cockpit windows covered, and strongbacks attached to its payload bay doors -- rolls past Orbiter Processing Facility-3, or OPF-3, at right, on its way from OPF-2 to the Vehicle Assembly Building, or VAB. Discovery will be stored inside the VAB for approximately one month while shuttle Atlantis undergoes processing in OPF-2 following its final mission, STS-135. Discovery flew its 39th and final mission, STS-133, in February and March 2011, and currently is being prepared for public display at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Virginia. For more information about Discovery's Transition and Retirement, visit www.nasa.gov/mission_pages/shuttle/launch/discovery_rss_collection_archive_1.html. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – Preparations are under way to tow space shuttle Discovery to the Shuttle Landing Facility, or SLF, at NASA’s Kennedy Space Center in Florida. Discovery was in storage in the Vehicle Assembly Building’s high bay 4 awaiting departure from Kennedy’s Launch Complex 39 area for the final time. 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 transport 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/Kim Shiflett

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, a sling is attached to space shuttle Discovery to lift it onto the top of a Shuttle Carrier Aircraft with the aid of 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/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- Outside Orbiter Processing Facility-2, or OPF-2, at NASA's Kennedy Space Center in Florida, media are on hand to cover the move of space shuttle Discovery to the Vehicle Assembly Building, or VAB. Discovery will be stored inside the VAB for approximately one month while shuttle Atlantis undergoes processing in OPF-2 following its final mission, STS-135. Discovery flew its 39th and final mission, STS-133, in February and March 2011, and currently is being prepared for public display at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Virginia. For more information about Discovery's Transition and Retirement, visit www.nasa.gov/mission_pages/shuttle/launch/discovery_rss_collection_archive_1.html. Photo credit: NASA/Ken Thornsley

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, workers disconnect the tow vehicle from space shuttle Discovery before it is lifted onto the top of a Shuttle Carrier Aircraft with the aid of 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/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, space shuttle Discovery is in position for lifting operations to begin at 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 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. 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

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, media representatives interview space shuttle managers following the arrival of space shuttle Discovery. Behind the rope with their backs to the camera are, from left, Bart Pannullo, NASA Transition and Retirement vehicle manager at Kennedy Dorothy Rasco, manager for Space Shuttle Program Transition and Retirement at NASA’s Johnson Space Center Stephanie Stilson, NASA flow director for Orbiter Transition and Retirement at Kennedy and Kevin Templin, transition manager for the Space Shuttle Program at Johnson. Discovery will be hoisted onto a Shuttle Carrier Aircraft, or SCA, with the aid of the mate-demate device at the landing facility. 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/Kim Shiflett

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft transporting space shuttle Discovery to its new home takes to the skies from the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, lifting off 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

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft transporting space shuttle Discovery to its new home heads south toward Brevard County’s beach communities, offering residents the opportunity to see the shuttle before it leaves the Space Coast for the last time. The aircraft took off from the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida 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

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, workers disconnect the tow vehicle from space shuttle Discovery before it is lifted onto the top of a Shuttle Carrier Aircraft with the aid of 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/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, one of space shuttle Discovery’s payload bay doors is lifted shut with the aid of yellow-painted strongbacks, hardware used to support and operate the doors when the shuttle is not in space. Discovery's payload bay doors are being closed for the final time during Space Shuttle Program transition and retirement activities. Following the door closure, the vehicle will be powered down for the last time. Discovery is being prepared for public display at the Smithsonian’s National Air and Space Museum Steven F. Udvar-Hazy Center in Chantilly, Va., in 2012. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, the "vehicle powered" sign is lit as preparations are made to power down space shuttle Discovery for the last time during Space Shuttle Program transition and retirement activities. "Power down" follows the final closure of Discovery's payload bay doors. Discovery is being prepared for public display at the Smithsonian’s National Air and Space Museum Steven F. Udvar-Hazy Center in Chantilly, Va., in 2012. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft transporting space shuttle Discovery to its new home departs from NASA’s Kennedy Space Center in Florida at 7 a.m. EDT accompanied by a T-38 jet. The duo are heading south to fly over Brevard County’s beach communities for residents to get a look at the shuttle before it leaves the Space Coast for the last time. 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 today, 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/Glenn Benson

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft transporting space shuttle Discovery to its new home lifts off the runway at 7 a.m. EDT as it approaches the mate/demate device at the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida. 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

CAPE CANAVERAL, Fla. – A NASA C-9 “Pathfinder” DC-9 takes off from the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida ahead of space shuttle Discovery, which is bolted to the top of a Shuttle Carrier Aircraft. The craft are set to begin their 3 1/2 hour ferry flight to the Washington Dulles International Airport in Virginia at about 7 a.m. EDT. The Pathfinder will fly about 100 miles ahead of the attached pair, making sure the flight path is free of harmful weather or hazardous conditions. Discovery is leaving Kennedy after more than 28 years of service beginning with its arrival on the space coast Nov. 9, 1983. Discovery first launched to space Aug. 30, 1984, on the STS-41D mission. Discovery is the agency's most-flown shuttle with 39 missions, more than 148 million miles and a total of one year in space. Discovery is set to move to the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center on April 19 where it will be placed on public display. 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/Frankie Martin

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft transporting space shuttle Discovery to its new home takes off from the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida at 7 a.m. EDT. The duo will fly south over Brevard County’s beach communities for residents to get a look at the shuttle before it leaves the Space Coast for the last time. 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 today, 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/Rusty Backer

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

CAPE CANAVERAL, Fla. – Space shuttle Discovery, mounted to a Shuttle Carrier Aircraft, takes off from the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. The duo is beginning their 3 1/2 hour ferry flight to the Washington Dulles International Airport in Virginia. Discovery is leaving Kennedy after more than 28 years of service beginning with its arrival on the space coast Nov. 9, 1983. Discovery first launched to space Aug. 30, 1984, on the STS-41D mission. Discovery is the agency's most-flown shuttle with 39 missions, more than 148 million miles and a total of one year in space. Discovery is set to move to the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center on April 19 where it will be placed on public display. 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/Jim Grossmann

CAPE CANAVERAL, Fla. -- Outside Orbiter Processing Facility-2, or OPF-2, at NASA's Kennedy Space Center in Florida, Stephanie Stilson, Transition and Retirement orbiter flow director, answers questions from the media during the move of space shuttle Discovery to the Vehicle Assembly Building, or VAB. Discovery will be stored inside the VAB for approximately one month while shuttle Atlantis undergoes processing in OPF-2 following its final mission, STS-135. Discovery flew its 39th and final mission, STS-133, in February and March 2011, and currently is being prepared for public display at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Virginia. For more information about Discovery's Transition and Retirement, visit www.nasa.gov/mission_pages/shuttle/launch/discovery_rss_collection_archive_1.html. Photo credit: NASA/Ken Thornsley

CAPE CANAVERAL, Fla. – Space shuttle Discovery is towed 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

CAPE CANAVERAL, Fla. – Space shuttle Discovery rolls out of the Vehicle Assembly Building, or VAB, at NASA’s Kennedy Space Center in Florida, into darkness for its trip to the Shuttle Landing Facility, or SLF. Its move got under way at 5 a.m. EDT. Discovery was in storage in the VAB’s high bay 4 awaiting departure from Kennedy’s Launch Complex 39 area for the final time. 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 transport 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/Kim Shiflett

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2, or OPF-2, at NASA's Kennedy Space Center in Florida, workers evaluate space shuttle Discovery's readiness for its move to the Vehicle Assembly Building, or VAB. Discovery will be stored inside the VAB for approximately one month while shuttle Atlantis undergoes processing in OPF-2 following its final mission, STS-135. Discovery flew its 39th and final mission, STS-133, in February and March 2011, and currently is being prepared for public display at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Virginia. For more information about Discovery's Transition and Retirement, visit www.nasa.gov/mission_pages/shuttle/launch/discovery_rss_collection_archive_1.html. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – Media representatives are on hand for the arrival of space shuttle Discovery at 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

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, Center Director Robert Cabana (center) is on hand for the final power down of space shuttle Discovery during Space Shuttle Program transition and retirement activities. "Power down" follows the final closure of Discovery's payload bay doors. Discovery is being prepared for public display at the Smithsonian’s National Air and Space Museum Steven F. Udvar-Hazy Center in Chantilly, Va., in 2012. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Space shuttle Discovery nears the mate-demate device, or MDD, at the Shuttle Landing Facility 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/Kim Shiflett

CAPE CANAVERAL, Fla. - The Shuttle Carrier Aircraft transporting space shuttle Discovery soars overhead shortly after takeoff from NASA Kennedy Space Center's runway 15 at 7 a.m. EDT. The duo is beginning its ferry flight to the Washington Dulles International Airport in Virginia that also includes a flyby of the Space Coast and Washington, D.C. Discovery is leaving Kennedy after more than 28 years of service beginning with its arrival on the space coast Nov. 9, 1983. Discovery is set to move to the Smithsonian's National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va., on April 19 where it will be placed on public display. For more information on the Shuttle Carrier Aircraft, 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 Powers and Tim Terry

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft transporting space shuttle Discovery to its new home departs from NASA’s Kennedy Space Center in Florida at 7 a.m. EDT. The duo are heading south to fly over Brevard County’s beach communities, offering residents the opportunity to see the shuttle before it leaves the Space Coast for the last time. 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

CAPE CANAVERAL, Fla. – A team of aerospace technicians accompanies space shuttle Discovery as it is towed for the final time from the Launch Complex 39 area to the Shuttle Landing Facility or SLF, at NASA’s Kennedy Space Center in Florida. A tail cone has been installed over Discovery’s 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/Kim Shiflett

CAPE CANAVERAL, Fla. – Daybreak at the Shuttle Landing Facility, or SLF, at NASA’s Kennedy Space Center in Florida finds preparations under way to lift space shuttle Discovery onto the back of the Shuttle Carrier Aircraft in the background. The lift will be accomplished with the aid of a mate-demate device, or MDD, a large gantry-like steel structure used to hoist a shuttle off the ground and position it onto the back of an 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. 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/Kim Shiflett

CAPE CANAVERAL, Fla. – Just after sunrise, visitors to Cocoa Beach catch a final glimpse of the Shuttle Carrier Aircraft transporting space shuttle Discovery from the Space Coast to its new home in Virginia. 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 ferrying Discovery to the Washington Dulles International Airport in Virginia today, after which the shuttle will be placed on display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center around 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/R. D. Lee

CAPE CANAVERAL, Fla. – Space shuttle Discovery rolls past a Shuttle Carrier Aircraft, or SCA, at the Shuttle Landing Facility, or SLF, at NASA’s Kennedy Space Center in Florida. This SCA, designated NASA 905, is a Boeing 747 jet originally manufactured for commercial use, which was modified by NASA to transport the shuttles between destinations on Earth. 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

CAPE CANAVERAL, Fla. – Space shuttle Discovery begins its trip to the Shuttle Landing Facility, or SLF, at NASA’s Kennedy Space Center in Florida. In the background is the 525-foot-tall Vehicle Assembly Building, or VAB. Discovery was in storage in the VAB’s high bay 4 awaiting departure from Kennedy’s Launch Complex 39 area for the final time. 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/Kim Shiflett

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, yellow-painted strongbacks complete the task of closing space shuttle Discovery’s payload bay doors for the final time during Space Shuttle Program transition and retirement activities. Strongbacks are used to support and operate the doors when the shuttle is not in space. Following the door closure, the vehicle will be powered down for the last time. Discovery is being prepared for public display at the Smithsonian’s National Air and Space Museum Steven F. Udvar-Hazy Center in Chantilly, Va., in 2012. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, space shuttle Discovery enters the Vehicle Assembly Building, or VAB, after rolling from Orbiter Processing Facility-2, or OPF-2. Discovery will be stored inside the VAB for approximately one month while shuttle Atlantis undergoes processing in OPF-2 following its final mission, STS-135. Discovery flew its 39th and final mission, STS-133, in February and March 2011, and currently is being prepared for public display at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Virginia. For more information about Discovery's Transition and Retirement, visit www.nasa.gov/mission_pages/shuttle/launch/discovery_rss_collection_archive_1.html. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – Space shuttle Discovery, mounted to a Shuttle Carrier Aircraft, flies over the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida after making a flyby of Cocoa Beach and Patrick Air Force Base. The duo is beginning its ferry flight to the Washington Dulles International Airport in Virginia that also includes a flyby of the Space Coast and Washington, D.C. Also flying along with the pair is a T-38 training jet. Discovery is leaving Kennedy after more than 28 years of service beginning with its arrival on the space coast Nov. 9, 1983. Discovery first launched to space Aug. 30, 1984, on the STS-41D mission. Discovery is the agency's most-flown shuttle with 39 missions, more than 148 million miles and a total of one year in space. Discovery is set to move to the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center on April 19 where it will be placed on public display. 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/Kenny Allen

CAPE CANAVERAL, Fla. – Sunrise over the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida reveals the Shuttle Carrier Aircraft that is transporting space shuttle Discovery to its new home preparing for takeoff. 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/Rusty Backer

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, a sling is attached to space shuttle Discovery to lift it onto the top of this Shuttle Carrier Aircraft with the aid of the mate-demate device, in the background. 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

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2, or OPF-2, at NASA's Kennedy Space Center in Florida, blankets covering the frame of space shuttle Discovery show evidence of its 39 successful spaceflights. Discovery will be stored inside the VAB for approximately one month while shuttle Atlantis undergoes processing in OPF-2 following its final mission, STS-135. Discovery flew its 39th and final mission, STS-133, in February and March 2011, and currently is being prepared for public display at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Virginia. For more information about Discovery's Transition and Retirement, visit www.nasa.gov/mission_pages/shuttle/launch/discovery_rss_collection_archive_1.html. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft transporting space shuttle Discovery, accompanied by a T-38 jet, flies over Cocoa Beach just after sunrise, giving Brevard County residents the opportunity to see the shuttle for the last time before it leaves the Space Coast for its new home. 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 ferrying Discovery to the Washington Dulles International Airport in Virginia today, after which the shuttle will be placed on display in the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center around 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/R. D. Lee

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility at NASA’s Kennedy Space Center in Florida, workers verify that space shuttle Discovery is ready to be lifted onto the top of a Shuttle Carrier Aircraft with the aid of 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/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, Center Director Robert Cabana, second from right, joins space shuttle support personnel in a ceremony following the final power down of space shuttle Discovery during Space Shuttle Program transition and retirement activities. "Power down" followed the final closure of Discovery's payload bay doors. Discovery is being prepared for public display at the Smithsonian’s National Air and Space Museum Steven F. Udvar-Hazy Center in Chantilly, Va., in 2012. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, space shuttle Discovery backs out of its processing bay, Orbiter Processing Facility-2, or OPF-2, to begin the move to the Vehicle Assembly Building, or VAB. Discovery will be stored inside the VAB for approximately one month while shuttle Atlantis undergoes processing in OPF-2 following its final mission, STS-135. Discovery flew its 39th and final mission, STS-133, in February and March 2011, and currently is being prepared for public display at the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center in Virginia. For more information about Discovery's Transition and Retirement, visit www.nasa.gov/mission_pages/shuttle/launch/discovery_rss_collection_archive_1.html. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Space shuttle Discovery, mounted to a Shuttle Carrier Aircraft, flies over the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida after making a flyby of Cocoa Beach and Patrick Air Force Base. The duo is beginning its ferry flight to the Washington Dulles International Airport in Virginia that also includes a flyby of the Space Coast and Washington, D.C. Also flying along with the pair is a T-38 training jet. Discovery is leaving Kennedy after more than 28 years of service beginning with its arrival on the space coast Nov. 9, 1983. Discovery first launched to space Aug. 30, 1984, on the STS-41D mission. Discovery is the agency's most-flown shuttle with 39 missions, more than 148 million miles and a total of one year in space. Discovery is set to move to the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center on April 19 where it will be placed on public display. 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/Kenny Allen

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

CAPE CANAVERAL, Fla. – Space shuttle Discovery, mounted to a Shuttle Carrier Aircraft, slowly rolls along the runway of the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. The duo is set to begin their 3 1/2 hour ferry flight to the Washington Dulles International Airport in Virginia at about 7 a.m. EDT. Above the two craft is a NASA helicopter covering the departure. Discovery is leaving Kennedy after more than 28 years of service beginning with its arrival on the space coast Nov. 9, 1983. Discovery first launched to space Aug. 30, 1984, on the STS-41D mission. Discovery is the agency's most-flown shuttle with 39 missions, more than 148 million miles and a total of one year in space. Discovery is set to move to the Smithsonian's National Air and Space Museum Steven F. Udvar-Hazy Center on April 19 where it will be placed on public display. 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/Frankie Martin

CAPE CANAVERAL, Fla. – Preparations to tow space shuttle Discovery from the Vehicle Assembly Building, or VAB, to the Shuttle Landing Facility, or SLF, are under way at NASA’s Kennedy Space Center in Florida. Discovery was in storage in the VAB’s high bay 4 awaiting departure from Kennedy’s Launch Complex 39 area for the final time. 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 transport 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/Kim Shiflett

CAPE CANAVERAL, Fla. – Space shuttle Discovery is towed to the Shuttle Landing Facility, or SLF, at NASA’s Kennedy Space Center in Florida. At the SLF, Discovery will be hoisted onto the back of the Shuttle Carrier Aircraft, or SCA, in the background, 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/Kim Shiflett