SL2-X9-747 (June 1973) --- Astronaut Paul J. Weitz, Skylab 2 pilot, mans the control and display console of the Apollo Telescope Mount (ATM) in this onboard view photographed in Earth orbit. The ATM C&D console is located in the Multiple Docking Adapter (MDA) of the Skylab 1/2 space station. Weitz, along with astronaut Charles Conrad Jr., commander, and scientist-astronaut Joseph P. Kerwin, science pilot, went on to successfully complete a 28-day mission in Earth orbit. Photo credit: NASA

Space Shuttle Discovery mounted atop a NASA 747 Shuttle Carrier Aircraft at Washington Dulles Airport the first orbiter retired from NASA's shuttle fleet

Space Shuttle Discovery mounted atop a NASA 747 Shuttle Carrier Aircraft at Washington Dulles Airport the first orbiter retired from NASA's shuttle fleet

Space Shuttle Discovery mounted atop a NASA 747 Shuttle Carrier Aircraft at Washington Dulles Airport the first orbiter retired from NASA's shuttle fleet

Space Shuttle Discovery mounted atop a NASA 747 Shuttle Carrier Aircraft at Washington Dulles Airport the first orbiter retired from NASA's shuttle fleet

Space Shuttle Discovery mounted atop a NASA 747 Shuttle Carrier Aircraft at Washington Dulles Airport the first orbiter retired from NASA's shuttle fleet

Space Shuttle Discovery mounted atop a NASA 747 Shuttle Carrier Aircraft at Washington Dulles Airport the first orbiter retired from NASA's shuttle fleet

The sun begins to break through the clouds over NASA's two 747 Shuttle Carrier Aircraft on the NASA Dryden ramp after a rain shower in February 2001.

The NASA Dryden 747 Shuttle Carrier Aircraft crew poses in an engine inlet; Standing L to R - aircraft mechanic John Goleno and SCA Team Leader Pete Seidl; Kneeling L to R - aircraft mechanics Todd Weston and Arvid Knutson, and avionics technician Jim Bedard NASA uses two modified Boeing 747 jetliners, originally manufactured for commercial use, as Space Shuttle Carrier Aircraft (SCA). One is a 747-100 model, while the other is designated a 747-100SR (short range). The two aircraft are identical in appearance and in their performance as Shuttle Carrier Aircraft. The 747 series of aircraft are four-engine intercontinental-range swept-wing "jumbo jets" that entered commercial service in 1969. The SCAs are used to ferry space shuttle orbiters from landing sites back to the launch complex at the Kennedy Space Center, and also to and from other locations too distant for the orbiters to be delivered by ground transportation. The orbiters are placed atop the SCAs by Mate-Demate Devices, large gantry-like structures which hoist the orbiters off the ground for post-flight servicing, and then mate them with the SCAs for ferry flights.

Boeing 747 in flight

Boeing 747 in flight

N-257 MVSRF, Boeing 747 simulator; 747-400 cab exterior.

N-257 MVSRF, Boeing 747 simulator; 747-400 cab exterior.

The NASA logo on a hangar is framed by the noses of NASA's two modified 747 Shuttle Carrier Aircraft on the ramp at NASA Dryden in this 1995 photo.

NASA's two modified Boeing 747 Shuttle Carrier Aircraft #911 (left) and #905 (right) were nose-to-nose on the ramp at NASA Dryden in this 1995 photo.

Aerial photo of NASA Dryden Flight Research Center with the Endeavour Space Shuttle and 747 Shuttle Carrier Aircraft taxiing on ramp.

Boeing model 747 flight deck (photo courtesy: National Geographic)

N-257 MVSRF, Boeing 747 simulator; control room with crew.

The Space Shuttle Enterprise, the nation's prototype space shuttle orbiter, before departing NASA's Dryden Flight Research Center, Edwards, California, at 11:00 a.m., 16 May 1983, on the first leg of its trek to the Paris Air Show at Le Bourget Airport, Paris, France. Seen here atop the huge 747 Shuttle Carrier Aircraft (SCA), the first stop for the Enterprise was Peterson AFB, Colorado Springs, Colorado. Piloting the 747 on the Europe trip were Joe Algranti, Johnson Space Center Chief Pilot, Astronaut Dick Scobee, and NASA Dryden Chief Pilot Tom McMurtry. Flight engineers for that portion of the flight were Dryden's Ray Young and Johnson Space Center's Skip Guidry. The Enterprise, named after the spacecraft of Star Trek fame, was originally carried and launched by the 747 during the Approach and Landing Tests (ALT) at Dryden Flight Research Center.

The Space Shuttle Enterprise, the nation's prototype space shuttle orbiter, departed NASA's Dryden Flight Research Center, Edwards, California, at 11:00 a.m., 16 May 1983, on the first leg of its trek to the Paris Air Show at Le Bourget Airport, Paris, France. Carried by the huge 747 Shuttle Carrier Aircraft (SCA), the first stop for the Enterprise was Peterson AFB, Colorado Springs, Colorado. Piloting the 747 on the Europe trip were Joe Algranti, Johnson Space Center Chief Pilot, Astronaut Dick Scobee, and NASA Dryden Chief Pilot Tom McMurtry. Flight engineers for that portion of the flight were Dryden's Ray Young and Johnson Space Center's Skip Guidry. The Enterprise, named after the spacecraft of Star Trek fame, was originally carried and launched by the 747 during the Approach and Landing Tests (ALT) at Dryden Flight Research Center.

N-257 MVSRF, Boeing 747 simulator; cockpit and Navigators station with Barry Sullivan & Robert Shiner

N-257 CVSRF Boeing 747-400 simulator cockpit with B Sullivan and R Shiner

Ames CVSRF (Crew Vehicle System Research Facility) 747 cab

Ames CVSRF (Crew Vehicle System Research Facility) 747 cab

Ames CVSRF (Crew Vehicle System Research Facility) 747 cab

Ames CVSRF (Crew Vehicle System Research Facility) 747 cab

Ames CVSRF (Crew Vehicle System Research Facility) 747 cab

Leah Robson and Bridgette Puljiz of Tehachapi in the flight deck of NASA's modified Boeing 747 space shuttle carrier aircraft during Take Your Children to Work Day June 22 at NASA Dryden Flight Research Center.

SOFIA's primary mirror assembly is lifted above wing level prior to its reinstallation in the telescope cavity of NASA's 747 airborne observatory Oct. 8, 2008.

One of NASA's two modified Boeing 747 Shuttle Carrier Aircraft is silhouetted against the morning sky at sunrise on the ramp at Edwards Air Force Base.

Puffy white clouds and a flooded lakebed form a backdrop as a T-38 support aircraft taxies across the ramp in front of NASA's Boeing 747 Shuttle Carrier Aircraft.

Shuttle Atlantis emerges from the Mate-Demate-Device mounted to Boeing 747 Shuttle Carrier Aircraft for the return flight to Kennedy Space Center in Florida.

NASA's modified Boeing 747 Shuttle Carrier Aircraft with the Space Shuttle Endeavour on top climbs out after takeoff from Edwards Air Force Base on the first leg of its ferry flight back to the Kennedy Space Center in Florida.

Leah Robson and Bridgette Puljiz of Tehachapi (seated) and Zachary Johnson of Palmdale (back to camera) look over the maze of dials and switches in the flight deck of NASA's modified Boeing 747 space shuttle carrier aircraft during Take Your Children to Work Day June 22 at NASA Dryden Flight Research Center.

The Space Shuttle Endeavour, mounted securely atop one of NASA's modified Boeing 747 Shuttle Carrier Aircraft, left NASA's Dryden Flight Research Center at Edwards Air Force Base in Southern California at sunrise on Friday, June 28.

A brief tour through NASA's modified Boeing 747 Shuttle Carrier Aircraft was a popular attraction at the Edwards Air Force Base open house Oct. 28-29, 2006.

Crowds thronged around NASA's modified 747 Shuttle Carrier Aircraft and an Air Force B-1B Lancer at the Edwards Air Force Base open house Oct. 28-29, 2006.

NASA's modified Boeing 747 Shuttle Carrier Aircraft with the Space Shuttle Endeavour on top lifts off from Edwards Air Force Base to begin its ferry flight back to the Kennedy Space Center in Florida.

S77-27512 (12 Aug 1977) --- The Shuttle Orbiter 101 "Enterprise" soars above the NASA 747 carrier aircraft only seconds after separating during the first free flight of the Shuttle Approach and Landing Tests (ALTs) conducted on August 12, 1977 at Dryden Flight Research Center in Southern California. Astronauts Fred W. Haise Jr., and C. Gordon Fullerton were the crew of the "Enterprise." The ALT free flights are designed to verify Orbiter subsonic airworthiness, integrated systems operations and pilot-guided approach and landing capability and satisfying prerequisites to automatic flight control and navigation mode.

The Space Shuttle Endeavour, mounted securely atop one of NASA's modified Boeing 747 Shuttle Carrier Aircraft, left NASA's Dryden Flight Research Center at Edwards Air Force Base in Southern California at sunrise on Friday, June 28, nine days after concluding mission STS-111 to the International Space Station with a landing at Edwards.

KENNEDY SPACE CENTER, FLA. - A view inside the Shuttle Carrier Aircraft, a modified Boeing 747. The plane carried the orbiter Discovery on a ferry flight to NASA Kennedy Space Center from Edwards Air Force Base in California, arriving Aug. 21. Returning to Earth from Return to Flight mission STS-114, Discovery landed at Edwards Aug. 9 after waive-off from KSC due to weather concerns.

KENNEDY SPACE CENTER, FLA. - A view inside the Shuttle Carrier Aircraft, a modified Boeing 747. The plane carried the orbiter Discovery on a ferry flight to NASA Kennedy Space Center from Edwards Air Force Base in California, arriving Aug. 21. Returning to Earth from Return to Flight mission STS-114, Discovery landed at Edwards Aug. 9 after waive-off from KSC due to weather concerns.

KENNEDY SPACE CENTER, FLA. - A view inside the Shuttle Carrier Aircraft, a modified Boeing 747. The plane carried the orbiter Discovery on a ferry flight to NASA Kennedy Space Center from Edwards Air Force Base in California, arriving Aug. 21. Returning to Earth from Return to Flight mission STS-114, Discovery landed at Edwards Aug. 9 after waive-off from KSC due to weather concerns.

KENNEDY SPACE CENTER, FLA. - A view inside the Shuttle Carrier Aircraft, a modified Boeing 747. The plane carried the orbiter Discovery on a ferry flight to NASA Kennedy Space Center from Edwards Air Force Base in California, arriving Aug. 21. Returning to Earth from Return to Flight mission STS-114, Discovery landed at Edwards Aug. 9 after waive-off from KSC due to weather concerns.

NASA's 747 Shuttle Carrier Aircraft No. 911, with the space shuttle orbiter Endeavour securely mounted atop its fuselage, taxies to the runway to begin the ferry flight from Rockwell's Plant 42 at Palmdale, California, where the orbiter was built, to the Kennedy Space Center, Florida. At Kennedy, the space vehicle was processed and launched on orbital mission STS-49, which landed at NASA's Ames-Dryden Flight Research Facility (later redesignated Dryden Flight Research Center), Edwards, California, 16 May 1992. NASA 911, the second modified 747 that went into service in November 1990, has special support struts atop the fuselage and internal strengthening to accommodate the added weight of the orbiters.

NASA's 747 Shuttle Carrier Aircraft No. 911, with the space shuttle orbiter Endeavour securely mounted atop its fuselage, begins the ferry flight from Rockwell's Plant 42 at Palmdale, California, where the orbiter was built, to the Kennedy Space Center, Florida. At Kennedy, the space vehicle was processed and launched on orbital mission STS-49, which landed at NASA's Ames-Dryden Flight Research Facility (later redesignated Dryden Flight Research Center), Edwards, California, 16 May 1992. NASA 911, the second modified 747 that went into service in November 1990, has special support struts atop the fuselage and internal strengthening to accommodate the added weight of the orbiters.

NASA's modified Boeing 747 Shuttle Carrier Aircraft with the Space Shuttle Atlantis on top lifts off from Edwards Air Force Base to begin its ferry flight back to the Kennedy Space Center in Florida. The cross-country journey will take approximately two days, with stops at several intermediate points for refueling.

NASA's modified Boeing 747 Shuttle Carrier Aircraft with the Space Shuttle Atlantis on top lifts off from Edwards Air Force Base to begin its ferry flight back to the Kennedy Space Center in Florida. The cross-country journey will take approximately two days, with stops at several intermediate points for refueling.

NASA's modified Boeing 747 Shuttle Carrier Aircraft with the Space Shuttle Atlantis on top lifts off from Edwards Air Force Base to begin its ferry flight back to the Kennedy Space Center in Florida. The cross-country journey will take approximately two days, with stops at several intermediate points for refueling.

STS083-747-088 (4-8 April 1997)--- Mayon Volcano with a Plume, Luzon, the Philippines Mayon has the classic conical shape of a strato volcano. It is the most active volcano in the Philippines and continues to be active as demonstrated by the plume in the photo. Since 1616, Mayon has erupted 47 times. The most recent major eruption, in 1993, began unexpectedly with an explosion. The initial eruption lasted only 30 minutes but it generated pyroclastic flows that killed 68 people and prompted the evacuation of 60,000 others.

JSC2005-E-36604 (21 August 2005) --- The Space Shuttle Discovery, atop a specially modified Boeing 747, was photographed following touch down at NASA Kennedy Space Center’s (KSC) Shuttle Landing Facility on Aug. 21, 2005 after a ferry flight from Edwards Air Force Base in California, where the shuttle landed Aug. 9. The 747, known as the Shuttle Carrier Aircraft (SCA), brought Discovery home to KSC after completing the historic STS-114 Return to Flight mission.

The Space Shuttle Discovery, mated to NASA's 747 Shuttle Carrier Aircraft (SCA), takes to the air for its ferry flight back to the Kennedy Space Center in Florida. The spacecraft, with a crew of six, was launched into a 57-degree high inclination orbit from the Kennedy Space Center, Florida, at 3:23 p.m., 9 September 1994. The mission featured the study of clouds and the atmosphere with a laser beaming system called Lidar In-Space Technology Experiment (LITE), and the first untethered space walk in ten years. A Spartan satellite was also deployed and later retrieved in the study of the sun's corona and solar wind. The mission was scheduled to end Sunday, 18 September, but was extended one day to continue science work. Bad weather at the Kennedy Space Center on 19 September, forced a one-day delay to September 20, with a weather divert that day to Edwards. Mission commander was Richard Richards, the pilot Blaine Hammond, while mission specialists were Jerry Linenger, Susan Helms, Carl Meade, and Mark Lee.

First Shuttle/747 Captive Flight

Enterprise - Free Flight after Separation from 747

Enterprise - Free Flight after Separation from 747

STS083-747-026 (4-8 April 1997) --- Aswan Dam and Lake Nasser along the Nile River, Egypt. The Aswan Dam controls the flow of the Nile River forming Lake Nasser. Lake Nasser is reaching relatively high water levels due to the plentiful rains since December 1996 in Kenya, near the headwaters of the Nile river. The light colored areas in the Lake are where the sun is reflecting off the surface of the water. These areas are fairly calm and not disturbed by wind gusts enabling the sunglint to show water current patterns on the surface. The Aswan runway is seen as a dark set of lines west of the Aswan Dam.

The Space Shuttle Endeavour, atop NASA's 747 Shuttle Carrier Aircraft (SCA), taking off for the Kennedy Space Center shortly after its landing on 11 October 1994, at Edwards, California, to complete mission STS-68. Endeavour was being ferried from the Kennedy Space Center, Florida, to Air Force Plant 42, Palmdale, California, where it will undergo six months of inspections, modifications, and systems upgrades. The STS-68 11-day mission was devoted to radar imaging of Earth's geological features with the Space Radar Laboratory.

The space shuttle Discovery atop NASA's modified 747 is captured over the Mojave Desert while being ferried from NASA Dryden to the Kennedy Space Center. NASA's modified Boeing 747 Shuttle Carrier Aircraft with the Space Shuttle Discovery on top lifts off from Edwards Air Force Base to begin its ferry flight back to the Kennedy Space Center in Florida. The cross-country journey will take two days, with stops at several intermediate points for refueling. Space shuttle Discovery landed safely at NASA's Dryden Flight Research Center at Edwards Air Force Base in California at 5:11:22 a.m. PDT, August 9, 2005, following the very successful 14-day STS-114 return to flight mission. During their two weeks in space, Commander Eileen Collins and her six crewmates tested out new safety procedures and delivered supplies and equipment the International Space Station. Discovery spent two weeks in space, where the crew demonstrated new methods to inspect and repair the Shuttle in orbit. The crew also delivered supplies, outfitted and performed maintenance on the International Space Station. A number of these tasks were conducted during three spacewalks. In an unprecedented event, spacewalkers were called upon to remove protruding gap fillers from the heat shield on Discovery's underbelly. In other spacewalk activities, astronauts installed an external platform onto the Station's Quest Airlock and replaced one of the orbital outpost's Control Moment Gyroscopes. Inside the Station, the STS-114 crew conducted joint operations with the Expedition 11 crew. They unloaded fresh supplies from the Shuttle and the Raffaello Multi-Purpose Logistics Module. Before Discovery undocked, the crews filled Raffeallo with unneeded items and returned to Shuttle payload bay. Discovery launched on July 26 and spent almost 14 days on orbit.

S77-27945 (12 Aug 1977) --- The space shuttle Orbiter 101 "Enterprise" soars above the NASA 747 carrier aircraft after separating during the first free flight of the Shuttle Approach and Landing Tests (ALTs) conducted on Aug. 12, 1977 at Dryden Flight Research Center in Southern California. Astronauts Fred W. Haise Jr., and C. Gordon Fullerton were the crew of the "Enterprise." The ALT free flights are designed to verify Orbiter subsonic airworthiness, integrated systems operations and pilot-guided approach and landing capability and satisfying prerequisites to automatic flight control and navigation mode. Photo credit: NASA

NASA's specially modified 747 Shuttle Carrier Aircraft, or SCA, is positioned under the Space Shuttle Discovery to be attached for their ferry flight to the Kennedy Space Center in Florida. After its post-flight servicing and preparation at NASA Dryden in California, Discovery's return flight to Kennedy aboard the 747 will take approximately 2 days, with stops at several intermediate points for refueling. Space Shuttle Discovery landed safely at NASA's Dryden Flight Research Center at Edwards Air Force Base at 5:11:22 a.m. PDT, August 9, 2005, following the very successful 14-day STS-114 return to flight mission. During their two weeks in space, Commander Eileen Collins and her six crewmates tested out new safety procedures and delivered supplies and equipment the International Space Station. Discovery spent two weeks in space, where the crew demonstrated new methods to inspect and repair the Shuttle in orbit. The crew also delivered supplies, outfitted and performed maintenance on the International Space Station. A number of these tasks were conducted during three spacewalks. In an unprecedented event, spacewalkers were called upon to remove protruding gap fillers from the heat shield on Discovery's underbelly. In other spacewalk activities, astronauts installed an external platform onto the Station's Quest Airlock and replaced one of the orbital outpost's Control Moment Gyroscopes. Inside the Station, the STS-114 crew conducted joint operations with the Expedition 11 crew. They unloaded fresh supplies from the Shuttle and the Raffaello Multi-Purpose Logistics Module. Before Discovery undocked, the crews filled Raffeallo with unneeded items and returned to Shuttle payload bay. Discovery launched on July 26 and spent almost 14 days on orbit.

The space shuttle Atlantis atop NASA's 747 Shuttle Carrier Aircraft (SCA) during takeoff for a return ferry flight to the Kennedy Space Center from Edwards, California. The STS-66 mission was dedicated to the third flight of the Atmospheric Laboratory for Applications and Science-3 (ATLAS-3), part of NASA's Mission to Planet Earth program. The astronauts also deployed and retrieved a free-flying satellite designed to study the middle and lower thermospheres and perform a series of experiments covering life sciences research and microgravity processing. The landing was at 7:34 a.m. (PST) 14 November 1994, after being waved off from the Kennedy Space Center, Florida, due to adverse weather.

United Space Alliance employees Mark Burton and Russell Wazniak attach the forward mount fixture to Shuttle Endeavour for mounting the orbiter to the 747 Shuttle Carrier Aircraft.

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft, or SCA, rolls down the runway at NASA Kennedy Space Center’s Shuttle Landing Facility in Florida. The SCA touched down at 5:05 p.m. EDT to prepare for shuttle Endeavour’s ferry flight to the Los Angeles International Airport on Sept. 17. Photo credit: NASA_ Chris Chamberland

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft, or SCA, rolls down the runway at NASA Kennedy Space Center’s Shuttle Landing Facility in Florida. The SCA touched down at 5:05 p.m. EDT to prepare for shuttle Endeavour’s ferry flight to the Los Angeles International Airport on Sept. 17. Photo credit: NASA_ Chris Chamberland

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft, or SCA, approaches the runway at NASA Kennedy Space Center’s Shuttle Landing Facility in Florida. The SCA touched down at 5:05 p.m. EDT to prepare for shuttle Endeavour’s ferry flight to the Los Angeles International Airport on Sept. 17. Photo credit: NASA_Chris Chamberland

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft, or SCA, rolls onto the ramp area of NASA Kennedy Space Center’s Shuttle Landing Facility in Florida. The SCA touched down at 5:05 p.m. EDT to prepare for shuttle Endeavour’s ferry flight to the Los Angeles International Airport on Sept. 17. Photo credit: NASA_ Chris Chamberland

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft, or SCA, rolls down the runway at NASA Kennedy Space Center’s Shuttle Landing Facility in Florida. The SCA touched down at 5:05 p.m. EDT to prepare for shuttle Endeavour’s ferry flight to the Los Angeles International Airport on Sept. 17. Photo credit: NASA_ Chris Chamberland

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft, or SCA, approaches the runway at NASA Kennedy Space Center’s Shuttle Landing Facility in Florida. The SCA touched down at 5:05 p.m. EDT to prepare for shuttle Endeavour’s ferry flight to the Los Angeles International Airport on Sept. 17. Photo credit: NASA_Chris Chamberland

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft, or SCA, touches down on the runway at NASA Kennedy Space Center’s Shuttle Landing Facility in Florida. The SCA touched down at 5:05 p.m. EDT to prepare for shuttle Endeavour’s ferry flight to the Los Angeles International Airport on Sept. 17. Photo credit: NASA_ Chris Chamberland

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft, or SCA, rolls down the runway at NASA Kennedy Space Center’s Shuttle Landing Facility in Florida. The SCA touched down at 5:05 p.m. EDT to prepare for shuttle Endeavour’s ferry flight to the Los Angeles International Airport on Sept. 17. Photo credit: NASA_ Chris Chamberland

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft, or SCA, rolls onto the ramp area of NASA Kennedy Space Center’s Shuttle Landing Facility in Florida. The SCA touched down at 5:05 p.m. EDT to prepare for shuttle Endeavour’s ferry flight to the Los Angeles International Airport on Sept. 17. Photo credit: NASA_ Chris Chamberland

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft, or SCA, rolls onto the ramp area of NASA Kennedy Space Center’s Shuttle Landing Facility in Florida. The SCA touched down at 5:05 p.m. EDT to prepare for shuttle Endeavour’s ferry flight to the Los Angeles International Airport on Sept. 17. Photo credit: NASA_ Chris Chamberland

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft, or SCA, rolls onto the ramp area of NASA Kennedy Space Center’s Shuttle Landing Facility in Florida. The SCA touched down at 5:05 p.m. EDT to prepare for shuttle Endeavour’s ferry flight to the Los Angeles International Airport on Sept. 17. Photo credit: NASA_ Chris Chamberland

4980 - CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft, or SCA, approaches the runway at NASA Kennedy Space Center’s Shuttle Landing Facility in Florida. The SCA touched down at 5:05 p.m. EDT to prepare for shuttle Endeavour’s ferry flight to the Los Angeles International Airport on Sept. 17. Photo credit: NASA_Chris Chamberland

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft, or SCA, rolls to the ramp area of NASA Kennedy Space Center’s Shuttle Landing Facility in Florida. The SCA touched down at 5:05 p.m. EDT to prepare for shuttle Endeavour’s ferry flight to the Los Angeles International Airport on Sept. 17. Photo credit: NASA_ Chris Chamberland

CAPE CANAVERAL, Fla. – The Shuttle Carrier Aircraft, or SCA, rolls down the runway at NASA Kennedy Space Center’s Shuttle Landing Facility in Florida. The SCA touched down at 5:05 p.m. EDT to prepare for shuttle Endeavour’s ferry flight to the Los Angeles International Airport on Sept. 17. Photo credit: NASA_ Chris Chamberland

STS083-747-052 (4-8 April 1997) --- Sunglint on the Indus River, Sukkar, and Rohri, Pakistan. Sukkar city (27.42 north 68.52 east), Sindh province, southeastern Pakistan lies on the west bank of the Indus River, connected with Rohri on the opposite bank by a cantilever bridge. Midstream between the two cities is the strategic island fortress of Bukkur. The old town contains many historic tombs and mosques, including the Mir Ma'sum Shah Minaret (c. AD 1607). An industrial and trade center, it has biscuit, cigarette, oil, lime, and cement factories, and cotton, silk, thread, and flour mills; boat building is also significant. The surrounding region is a vast alluvial plain broken only occasionally by low limestone hills. A portion of the Thar Desert is reaching from the south to Rohri. The Sukkur Barrage, highlighted by the sunglint, was completed in 1932. Nearly 1 mile (1.6 kilometers) long it crosses the Indus River 3 miles (4.8 kilometers) below Sukkur Gorge and feeds irrigation canals. The canals originating from it serve a cultivable area of about five million acres of land producing both food and cash crops, such as wheat, cotton, rice, oilseed, and fruit cultivation.

S77-28931 (12 Oct. 1977) --- The Orbiter 101 "Enterprise" separates from the NASA 747 carrier aircraft to begin its first "tailcone-off" unpowered flight over desert and mountains of Southern California. A T-38 chase plane follows in right background. This was the fourth in a series of five piloted free flights. Photo credit: NASA

NASA's two Boeing 747 Shuttle Carrier Aircraft form the backdrop as pilot Dick Ewers banks NASA F/A-18 #845 low over Rogers Dry Lake to end a research flight.

NASA's specially modified 747 Shuttle Carrier Aircraft, or SCA, is positioned under the Space Shuttle Discovery to be attached for their ferry flight to the Kennedy Space Center in Florida. After its post-flight servicing and preparation at NASA Dryden in California, Discovery's return flight to Kennedy aboard the 747 will take approximately 2 days, with stops at several intermediate points for refueling. Space Shuttle Discovery landed safely at NASA's Dryden Flight Research Center at Edwards Air Force Base at 5:11:22 a.m. PDT, August 9, 2005, following the very successful 14-day STS-114 return to flight mission. During their two weeks in space, Commander Eileen Collins and her six crewmates tested out new safety procedures and delivered supplies and equipment the International Space Station. Discovery spent two weeks in space, where the crew demonstrated new methods to inspect and repair the Shuttle in orbit. The crew also delivered supplies, outfitted and performed maintenance on the International Space Station. A number of these tasks were conducted during three spacewalks. In an unprecedented event, spacewalkers were called upon to remove protruding gap fillers from the heat shield on Discovery's underbelly. In other spacewalk activities, astronauts installed an external platform onto the Station's Quest Airlock and replaced one of the orbital outpost's Control Moment Gyroscopes. Inside the Station, the STS-114 crew conducted joint operations with the Expedition 11 crew. They unloaded fresh supplies from the Shuttle and the Raffaello Multi-Purpose Logistics Module. Before Discovery undocked, the crews filled Raffeallo with unneeded items and returned to Shuttle payload bay. Discovery launched on July 26 and spent almost 14 days on orbit.

Space shuttle Enterprise is held aloft by a yellow sling and a set of cranes after it was removed from the top of NASA's 747 Shuttle Carrier Aircraft early Sunday morning at John F. Kennedy (JFK) International Airport in New York, Sunday, May 13, 2012 .The 747 was towed backwards so that Enterprise could be lowered. The shuttle will be placed on a barge that will move by tugboat up the Hudson River to the Intrepid Sea, Air & Space Museum in June. The shuttle will be lifted by crane and placed on the flight deck of the Intrepid, where it will be on exhibit to the public starting this summer in a temporary climate-controlled pavilion. Photo Credit: (NASA/Kim Shiflet)

The DC-8 aircraft is seen making a banking turn high above the NASA Dryden ramp. This view of the DC-8's left side reveals some of the modifications necessary for particular on-board experiments. To the right of the DC-8 is the edge of Rogers Dry Lake. Above the aircraft's forward fuselage is the Dryden Flight Research Center headquarters building, while other NASA facilities extend down the flightline to the right. Below the DC-8 is the Shuttle Carrier Aircraft (SCA), on which are visible attachment points for the Shuttle Orbiter.

The German-built 100-inch telescope that is the heart of NASA's Stratospheric Observatory for Infrared Astronomy is nestled in the SOFIA 747's rear fuselage.

S77-28649 (23 Sept 1977) --- The shuttle Orbiter 101 "Enterprise" sits atop the NASA 747 carrier aircraft in a piggy-back configuration prior to separation for the third free flight of the Shuttle Approach and Landing Tests (ALT) conducted on September 23, 1977, at the Dryden Flight Research Center (DFRC) in Southern California. The crew of the "enterprise" consisted of astronauts Fred W. Haise Jr., commander, and C. Gordon Fullerton, pilot. This photo was shot from one of the T-38 chase planes accompanying the ALT craft. Three other T-38 chase planes are pictured.

STS083-747-033 (4-8 April 1997) --- Center Pivot Irrigation, in Saudi Arabia. This irrigation project in Saudi Arabia is typical of many isolated irrigation projects scattered throughout the arid and hyper-arid regions of the Earth. Fossil water is mined from depths as great as 3,000 feet, pumped to the surface, and distributed via large center pivot irrigation feeds. The circles of green irrigated vegetation may comprise a variety of agricultural commodities from alfalfa to wheat. Diameters of the normally circular fields range from a few hundred meters to as much as 2 miles. The projects often trace out a narrow, sinuous, and seemingly random path. Actually, engineers generally seek ancient river channels now buried by the sand seas. The fossil waters mined in these projects accumulated during periods of wetter climate in the Pleistocene glacial epochs, between 10,000 to 2 million years ago, and are not being replenished under current climatic conditions. The projects, therefore, will have limited production as the reservoirs are drained. Water, of course, is the key to agriculture in Saudi Arabia. The Kingdom has implemented a multifaceted program to provide the vast supplies of water necessary to achieve the spectacular growth of the agricultural sector. A network of dams has been built to trap and utilize precious seasonal floods. Vast underground water reservoirs have been tapped through deep wells. Desalination plants have been built to produce fresh water from the sea for urban and industrial use, thereby freeing other sources for agriculture. Facilities have also been put into place to treat urban and industrial run-off for agricultural irrigation. These efforts collectively have helped transform vast tracts of the desert into fertile farmland. Land under cultivation has grown from under 400,000 acres in 1976 to more than 8 million acres in 1993.

NASA's modified Boeing 747 Shuttle Carrier Aircraft with the Space Shuttle Discovery on top lifts off from Edwards Air Force Base to begin its ferry flight back to the Kennedy Space Center in Florida. The cross-country journey will take two days, with stops at several intermediate points for refueling. Space Shuttle Discovery landed safely at NASA's Dryden Flight Research Center at Edwards Air Force Base in California at 5:11:22 a.m. PDT, August 9, 2005, following the very successful 14-day STS-114 return to flight mission. During their two weeks in space, Commander Eileen Collins and her six crewmates tested out new safety procedures and delivered supplies and equipment the International Space Station. Discovery spent two weeks in space, where the crew demonstrated new methods to inspect and repair the Shuttle in orbit. The crew also delivered supplies, outfitted and performed maintenance on the International Space Station. A number of these tasks were conducted during three spacewalks. In an unprecedented event, spacewalkers were called upon to remove protruding gap fillers from the heat shield on Discovery's underbelly. In other spacewalk activities, astronauts installed an external platform onto the Station's Quest Airlock and replaced one of the orbital outpost's Control Moment Gyroscopes. Inside the Station, the STS-114 crew conducted joint operations with the Expedition 11 crew. They unloaded fresh supplies from the Shuttle and the Raffaello Multi-Purpose Logistics Module. Before Discovery undocked, the crews filled Raffeallo with unneeded items and returned to Shuttle payload bay. Discovery launched on July 26 and spent almost 14 days on orbit.

NASA's modified Boeing 747 Shuttle Carrier Aircraft with the Space Shuttle Discovery on top lifts off from Edwards Air Force Base to begin its ferry flight back to the Kennedy Space Center in Florida. The cross-country journey will take two days, with stops at several intermediate points for refueling. Space Shuttle Discovery landed safely at NASA's Dryden Flight Research Center at Edwards Air Force Base in California at 5:11:22 a.m. PDT, August 9, 2005, following the very successful 14-day STS-114 return to flight mission. During their two weeks in space, Commander Eileen Collins and her six crewmates tested out new safety procedures and delivered supplies and equipment the International Space Station. Discovery spent two weeks in space, where the crew demonstrated new methods to inspect and repair the Shuttle in orbit. The crew also delivered supplies, outfitted and performed maintenance on the International Space Station. A number of these tasks were conducted during three spacewalks. In an unprecedented event, spacewalkers were called upon to remove protruding gap fillers from the heat shield on Discovery's underbelly. In other spacewalk activities, astronauts installed an external platform onto the Station's Quest Airlock and replaced one of the orbital outpost's Control Moment Gyroscopes. Inside the Station, the STS-114 crew conducted joint operations with the Expedition 11 crew. They unloaded fresh supplies from the Shuttle and the Raffaello Multi-Purpose Logistics Module. Before Discovery undocked, the crews filled Raffeallo with unneeded items and returned to Shuttle payload bay. Discovery launched on July 26 and spent almost 14 days on orbit.

NASA's modified Boeing 747 Shuttle Carrier Aircraft with the Space Shuttle Discovery on top lifts off from Edwards Air Force Base to begin its ferry flight back to the Kennedy Space Center in Florida. The cross-country journey will take two days, with stops at several intermediate points for refueling. Space Shuttle Discovery landed safely at NASA's Dryden Flight Research Center at Edwards Air Force Base in California at 5:11:22 a.m. PDT, August 9, 2005, following the very successful 14-day STS-114 return to flight mission. During their two weeks in space, Commander Eileen Collins and her six crewmates tested out new safety procedures and delivered supplies and equipment the International Space Station. Discovery spent two weeks in space, where the crew demonstrated new methods to inspect and repair the Shuttle in orbit. The crew also delivered supplies, outfitted and performed maintenance on the International Space Station. A number of these tasks were conducted during three spacewalks. In an unprecedented event, spacewalkers were called upon to remove protruding gap fillers from the heat shield on Discovery's underbelly. In other spacewalk activities, astronauts installed an external platform onto the Station's Quest Airlock and replaced one of the orbital outpost's Control Moment Gyroscopes. Inside the Station, the STS-114 crew conducted joint operations with the Expedition 11 crew. They unloaded fresh supplies from the Shuttle and the Raffaello Multi-Purpose Logistics Module. Before Discovery undocked, the crews filled Raffeallo with unneeded items and returned to Shuttle payload bay. Discovery launched on July 26 and spent almost 14 days on orbit.

The Space Shuttle Endeavour atop its modified Boeing 747 carrier aircraft lifts off from Edwards Air Force Base on the first leg of its ferry flight back to the Kennedy Space Center just after sunrise on Dec. 10, 2008.

The Space Shuttle Endeavour is slowly hoisted aloft in the Mate-Demate gantry at NASA's Dryden Flight Research Center before being mounted atop its modified 747 carrier aircraft for a ferry flight back to the Kennedy Space Center in Florida.

The modified Boeing 747 carrier aircraft carrying the Space Shuttle Endeavour soars aloft from Edwards Air Force Base on the first leg of its ferry flight back to the Kennedy Space Center just after sunrise on Dec. 10, 2008.

NASA's specially modified 747 with the Space Shuttle Columbia atop takes off to ferry the Shuttle back to Kennedy Space Center in Florida. Columbia had recently completed its first orbital mission with a landing at Edwards Air Force Base in California.

Space shuttle Discovery, mounted atop a NASA 747 Shuttle Carrier Aircraft (SCA), flies over the Washington skyline as seen from a NASA T-38 aircraft, Tuesday, April 17, 2012. Discovery, the first orbiter retired from NASA’s shuttle fleet, completed 39 missions, spent 365 days in space, orbited the Earth 5,830 times, and traveled 148,221,675 miles. NASA will transfer Discovery to the National Air and Space Museum to begin its new mission to commemorate past achievements in space and to educate and inspire future generations of explorers. Photo Credit: (NASA/Robert Markowitz)

Workers monitor the lift of the space shuttle Discovery from the top of the NASA 747 Shuttle Carrier Aircraft (SCA) at Washington Dulles International Airport, Thursday, April 19, 2012, in Sterling, VA. Discovery, the first orbiter retired from NASA’s shuttle fleet, completed 39 missions, spent 365 days in space, orbited the Earth 5,830 times, and traveled 148,221,675 miles. NASA will transfer Discovery to the National Air and Space Museum to begin its new mission to commemorate past achievements in space and to educate and inspire future generations of explorers. Photo Credit: (NASA/Bill Ingalls)

Space shuttle Discovery, mounted atop a NASA 747 Shuttle Carrier Aircraft (SCA) taxis in front of the main terminal at Washington Dulles International Airport, Tuesday, April 17, 2012, in Sterling, Va. Discovery, the first orbiter retired from NASA’s shuttle fleet, completed 39 missions, spent 365 days in space, orbited the Earth 5,830 times, and traveled 148,221,675 miles. NASA will transfer Discovery to the National Air and Space Museum to begin its new mission to commemorate past achievements in space and to educate and inspire future generations of explorers. Photo Credit: (NASA/Smithsonian Institution/Eric Long)

Space shuttle Enterprise, mounted atop a NASA 747 Shuttle Carrier Aircraft (SCA), is seen as it flies over the Manhattan Skyline with Freedom Tower in the background, Friday, April 27, 2012, in New York. Enterprise was the first shuttle orbiter built for NASA performing test flights in the atmosphere and was incapable of spaceflight. Originally housed at the Smithsonian's Steven F. Udvar-Hazy Center, Enterprise will be demated from the SCA and placed on a barge that will eventually be moved by tugboat up the Hudson River to the Intrepid Sea, Air & Space Museum in June. Photo Credit: (NASA/Robert Markowitz)

Space shuttle Discovery, mounted atop a NASA 747 Shuttle Carrier Aircraft (SCA), flies over the Washington skyline as seen from a NASA T-38 aircraft, Tuesday, April 17, 2012. Discovery, the first orbiter retired from NASA’s shuttle fleet, completed 39 missions, spent 365 days in space, orbited the Earth 5,830 times, and traveled 148,221,675 miles. NASA will transfer Discovery to the National Air and Space Museum to begin its new mission to commemorate past achievements in space and to educate and inspire future generations of explorers. Photo Credit: (NASA/Robert Markowitz)

Space shuttle Enterprise, mounted atop a NASA 747 Shuttle Carrier Aircraft (SCA), is seen as it flies near the Statue of Liberty and the Manhattan skyline, Friday, April 27, 2012, in New York. Enterprise was the first shuttle orbiter built for NASA performing test flights in the atmosphere and was incapable of spaceflight. Originally housed at the Smithsonian's Steven F. Udvar-Hazy Center, Enterprise will be demated from the SCA and placed on a barge that will eventually be moved by tugboat up the Hudson River to the Intrepid Sea, Air & Space Museum in June. Photo Credit: (NASA/Robert Markowitz)

Space shuttle Discovery, mounted atop a NASA 747 Shuttle Carrier Aircraft (SCA) lands at Washington Dulles International Airport, Tuesday, April 17, 2012, in Sterling, Va. Discovery, the first orbiter retired from NASA’s shuttle fleet, completed 39 missions, spent 365 days in space, orbited the Earth 5,830 times, and traveled 148,221,675 miles. NASA will transfer Discovery to the National Air and Space Museum to begin its new mission to commemorate past achievements in space and to educate and inspire future generations of explorers. Photo Credit: (NASA/Smithsonian Institution/Eric Long)

Space shuttle Discovery, mounted atop a NASA 747 Shuttle Carrier Aircraft (SCA) lands at Washington Dulles International Airport, Tuesday, April 17, 2012, in Sterling, Va. Discovery, the first orbiter retired from NASA’s shuttle fleet, completed 39 missions, spent 365 days in space, orbited the Earth 5,830 times, and traveled 148,221,675 miles. NASA will transfer Discovery to the National Air and Space Museum to begin its new mission to commemorate past achievements in space and to educate and inspire future generations of explorers. Photo Credit: (NASA/Smithsonian Institution/Eric Long)