Space Shuttle Retirement
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The retirement of
NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeeding t ...
's
Space Shuttle The Space Shuttle is a retired, partially reusable low Earth orbital spacecraft system operated from 1981 to 2011 by the U.S. National Aeronautics and Space Administration (NASA) as part of the Space Shuttle program. Its official program na ...
fleet took place from March to July 2011. ''
Discovery Discovery may refer to: * Discovery (observation), observing or finding something unknown * Discovery (fiction), a character's learning something unknown * Discovery (law), a process in courts of law relating to evidence Discovery, The Discovery ...
'' was the first of the three active Space Shuttles to be retired, completing its
final mission "Final Mission" is the 83rd episode of the American science fiction television series '' Star Trek: The Next Generation'', and the ninth episode of the fourth season. Set in the 24th century, the series follows the adventures of the Starfleet ...
on March 9, 2011; '' Endeavour'' did so on June 1. The final shuttle mission was completed with the landing of ''
Atlantis Atlantis ( grc, Ἀτλαντὶς νῆσος, , island of Atlas (mythology), Atlas) is a fictional island mentioned in an allegory on the hubris of nations in Plato's works ''Timaeus (dialogue), Timaeus'' and ''Critias (dialogue), Critias'' ...
'' on July 21, 2011, closing the 30-year
Space Shuttle program The Space Shuttle program was the fourth human spaceflight program carried out by the U.S. National Aeronautics and Space Administration (NASA), which accomplished routine transportation for Earth-to-orbit crew and cargo from 1981 to 2011. Its ...
. The Shuttle was presented to the public in 1972 as a "space truck" which would, among other things, be used to build a United States space station in
low Earth orbit A low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less than 0.25. Most of the artificial objects in outer space are in LEO, with an altitude never mor ...
in the early 1990s and then be replaced by a new vehicle. When the concept of the U.S. space station evolved into that of the
International Space Station The International Space Station (ISS) is the largest modular space station currently in low Earth orbit. It is a multinational collaborative project involving five participating space agencies: NASA (United States), Roscosmos (Russia), JAXA ...
, which suffered from long delays and design changes before it could be completed, the service life of the Space Shuttle was extended several times until 2011 when it was finally retired. In 2010 the Shuttle was formally scheduled for retirement with ''Atlantis'' being taken out of service first after
STS-132 STS-132 ( ISS assembly flight ULF4) was a NASA Space Shuttle mission, during which Space Shuttle ''Atlantis'' docked with the International Space Station on 16 May 2010. STS-132 was launched from the Kennedy Space Center on 14 May 2010. The prima ...
in May of that year, but the program was once again extended when the two final planned missions were delayed until 2011. Later, one additional mission was added for ''Atlantis'' for July 2011, extending the program further. Counter-proposals to the shuttle's retirement were considered by Congress and the prime contractor
United Space Alliance :''In this article, USA refers to the United Space Alliance, not the United States.'' United Space Alliance (USA) was a spaceflight operations company. USA was a joint venture which was established in August 1995 as a Limited Liability Company ...
as late as Spring 2010. Hardware developed for the Space Shuttle met various ends with conclusion of the program, including donation, disuse and/or disposal, or reuse. An example of reuse, is that one of the three
Multi-Purpose Logistics Module A Multi-Purpose Logistics Module (MPLM) is a large pressurized container that was used on Space Shuttle missions to transfer cargo to and from the International Space Station (ISS). Two MPLMs made a dozen trips in the Shuttle cargo bay and init ...
(MPLM) was converted to a permanent module for the
International Space Station The International Space Station (ISS) is the largest modular space station currently in low Earth orbit. It is a multinational collaborative project involving five participating space agencies: NASA (United States), Roscosmos (Russia), JAXA ...
.


Fate of surviving STS program hardware


Orbiters

On April 12, 2011, NASA announced a selection of locations for the remaining Shuttle orbiters: * Prior to its move to New York, ''Enterprise'' was displayed at the
Steven F. Udvar-Hazy Center The Steven F. Udvar-Hazy Center, also called the Udvar-Hazy Center, is the Smithsonian National Air and Space Museum (NASM)'s annex at Washington Dulles International Airport in the Chantilly area of Fairfax County, Virginia. It holds numerous ...
, Smithsonian Institution's
National Air and Space Museum The National Air and Space Museum of the Smithsonian Institution, also called the Air and Space Museum, is a museum in Washington, D.C., in the United States. Established in 1946 as the National Air Museum, it opened its main building on the Nat ...
,
Chantilly, Virginia Chantilly is a census-designated place (CDP) in western Fairfax County, Virginia. The population was 24,301 as of the 2020 census. Chantilly is named after an early-19th-century mansion and farm, which in turn took the name of an 18th-century p ...
, where ''Discovery'' has taken its place. Museums and other facilities not selected to receive an orbiter were disappointed. Elected officials representing Houston, Texas, location of the
Johnson Space Center The Lyndon B. Johnson Space Center (JSC) is NASA's center for human spaceflight (originally named the Manned Spacecraft Center), where human spaceflight training, research, and flight control are conducted. It was renamed in honor of the late U ...
; and Dayton, Ohio, location of the
National Museum of the United States Air Force The National Museum of the United States Air Force (formerly the United States Air Force Museum) is the official museum of the United States Air Force located at Wright-Patterson Air Force Base, northeast of Dayton, Ohio. The NMUSAF is the ...
, called for Congressional investigations into the selection process, though no such action was taken. While local and Congressional politicians in Texas questioned if partisan politics played a role in the selection, former JSC Director
Wayne Hale N. Wayne Hale Jr. (born July 5, 1954) is a former NASA engineer. Previously a flight director and Space Shuttle program manager, Hale served as NASA's Deputy Associate Administrator for Strategic Partnerships prior to his retirement on July 31, ...
wrote, "Houston didn't get an orbiter because Houston didn't deserve it", pointing to weak support from area politicians, media and residents, describing a "sense of entitlement". Chicago media questioned the decision not to include the
Adler Planetarium The Adler Planetarium is a public museum in Chicago, Illinois, dedicated to astronomy and astrophysics. It was founded in 1930 by local businessman Max Adler. Located on the northeastern tip of Northerly Island on Lake Michigan in the city, t ...
in the list of facilities receiving orbiters, pointing to Chicago's 3rd-largest population in the United States. The chair of the NASA committee that made the selections pointed to the guidance from Congress that the orbiters go to facilities where the most people could see them, and the ties to the space program of Southern California (home to
Edwards Air Force Base Edwards Air Force Base (AFB) is a United States Air Force installation in California. Most of the base sits in Kern County, but its eastern end is in San Bernardino County and a southern arm is in Los Angeles County. The hub of the base is E ...
, where nearly half of shuttle flights have ended and home to the plants which manufactured the orbiters and the
RS-25 The Aerojet Rocketdyne RS-25, also known as the Space Shuttle Main Engine (SSME), is a liquid-fuel cryogenic rocket engine that was used on NASA's Space Shuttle and is currently used on the Space Launch System (SLS). Designed and manufacture ...
engines), the Smithsonian (curator of the nation's air and space artifacts), the
Kennedy Space Center Visitor Complex The Kennedy Space Center Visitor Complex is the visitor center at NASA's Kennedy Space Center on Merritt Island, Florida. It features exhibits and displays, historic spacecraft and memorabilia, shows, two IMAX theaters, and a range of bus to ...
(where all Shuttle launches originated, and a large tourist draw) and the ''Intrepid'' Sea, Air & Space Museum (''Intrepid'' also served as the recovery ship for
Project Mercury Project Mercury was the first human spaceflight program of the United States, running from 1958 through 1963. An early highlight of the Space Race, its goal was to put a man into Earth orbit and return him safely, ideally before the Soviet Un ...
and
Project Gemini Project Gemini () was NASA's second human spaceflight program. Conducted between projects Mercury and Apollo, Gemini started in 1961 and concluded in 1966. The Gemini spacecraft carried a two-astronaut crew. Ten Gemini crews and 16 individual ...
). In August 2011 the NASA Inspector General released an audit of the display selection process; it highlighted issues which led to the final decision. The
Museum of Flight The Museum of Flight is a private non-profit air and space museum in the Seattle metropolitan area. It is located at the southern end of King County International Airport (Boeing Field) in the city of Tukwila, immediately south of Seattle.< ...
in Seattle, Washington,
March Field Air Museum The March Field Air Museum is an aviation museum near Moreno Valley and Riverside, California, adjacent to March Air Reserve Base. History The museum was founded in 1979 as March Air Force Base Museum. One of the first exhibits at the museum was ...
, Riverside, California,
Evergreen Aviation and Space Museum The Evergreen Aviation & Space Museum is an aviation museum in McMinnville, Oregon. Its exhibits include the Hughes H-4 Hercules (''Spruce Goose'') and more than fifty military and civilian aircraft, unmanned aerial vehicles (drones), and spacec ...
, McMinnville, Oregon,
National Museum of the U.S. Air Force The National Museum of the United States Air Force (formerly the United States Air Force Museum) is the official museum of the United States Air Force located at Wright-Patterson Air Force Base, northeast of Dayton, Ohio. The NMUSAF is the ...
, Dayton, Ohio,
San Diego Air and Space Museum San Diego Air & Space Museum (SDASM, formerly the San Diego Aerospace Museum) is an aviation and space exploration museum in San Diego, California, United States. The museum is located in Balboa Park and is housed in the former Ford Building, ...
, San Diego,
Space Center Houston Space Center Houston is a science museum that serves as the official visitor center of NASA Johnson Space Center in Houston. It was designated a Smithsonian Affiliate museum in 2014. The organization is owned by NASA, and operated under a co ...
, Houston, Texas,
Tulsa Air and Space Museum & Planetarium The Tulsa Air and Space Museum (TASM) is an ''aerospace museum'' in Tulsa, Oklahoma, United States. It is located in the northwest corner of the Tulsa International Airport property. It has of historical exhibits, hands-on activities, and vintage ...
, Tulsa, Oklahoma and
U.S. Space and Rocket Center The U.S. Space & Rocket Center in Huntsville, Alabama is a museum operated by the government of Alabama, showcasing rockets, achievements, and artifacts of the U.S. space program. Sometimes billed as "Earth's largest space museum", astronaut Ow ...
, Huntsville, Alabama scored poorly on international access. Additionally
Brazos Valley Museum of Natural History The Brazos Valley Museum of Natural History is a science, nature, and cultural history museum in Bryan, Texas, United States. The museum also maintains memberships in American Alliance of Museums, Natural Science Collections Alliance, and the So ...
and the Bush Library at Texas A&M, in College Station, Texas scored poorly on museum attendance, regional population and was the only facility found to pose a significant risk in transporting an orbiter there. Overall, the
California Science Center The California Science Center (sometimes spelled California ScienCenter) is a state agency and museum located in Exposition Park, Los Angeles, next to the Natural History Museum of Los Angeles County and the University of Southern California. ...
scored first and
Brazos Valley Museum of Natural History The Brazos Valley Museum of Natural History is a science, nature, and cultural history museum in Bryan, Texas, United States. The museum also maintains memberships in American Alliance of Museums, Natural Science Collections Alliance, and the So ...
scored last. The two most controversial locations which were not awarded an orbiter,
Space Center Houston Space Center Houston is a science museum that serves as the official visitor center of NASA Johnson Space Center in Houston. It was designated a Smithsonian Affiliate museum in 2014. The organization is owned by NASA, and operated under a co ...
and
National Museum of the U.S. Air Force The National Museum of the United States Air Force (formerly the United States Air Force Museum) is the official museum of the United States Air Force located at Wright-Patterson Air Force Base, northeast of Dayton, Ohio. The NMUSAF is the ...
, finished 2nd to last and near the middle of the list respectively. The report noted a scoring error, which if corrected would have placed the National Museum of the U.S. Air Force in a tie with the ''Intrepid'' Museum and Kennedy Visitor Complex (just below the California Science Center), although due to funding concerns the same decisions would have been made. The
Museum of Flight The Museum of Flight is a private non-profit air and space museum in the Seattle metropolitan area. It is located at the southern end of King County International Airport (Boeing Field) in the city of Tukwila, immediately south of Seattle.< ...
in Seattle, Washington was not selected to receive an orbiter but instead received the three–story Full Fuselage Trainer from the Space Vehicle Mockup Facility at
Johnson Space Center The Lyndon B. Johnson Space Center (JSC) is NASA's center for human spaceflight (originally named the Manned Spacecraft Center), where human spaceflight training, research, and flight control are conducted. It was renamed in honor of the late U ...
in Houston, Texas. Museum officials, though disappointed, were able to allow the public to go inside the trainer, something not possible with an actual orbiter. In addition to the challenge of transporting the large vehicles to the display site, placing the units on permanent display required considerable effort and cost. An article in the February 2012 issue of ''Smithsonian'' magazine discussed the work performed on ''
Discovery Discovery may refer to: * Discovery (observation), observing or finding something unknown * Discovery (fiction), a character's learning something unknown * Discovery (law), a process in courts of law relating to evidence Discovery, The Discovery ...
''. It involved removing the three main engines (they were slated to be reused on NASA's
Space Launch System The Space Launch System (SLS) is an American super heavy-lift expendable launch vehicle developed by NASA. As of 2022, SLS has the highest payload capacity of any rocket in operational service, as well as the greatest liftoff thrust of any r ...
); the windows were given to project engineers for analysis of how materials and systems fared after repeated space exposure; the communications modules were removed due to national–security concerns; and hazardous materials such as traces of propellants were thoroughly flushed from the plumbing. The total cost of preparation and delivery via a modified
Boeing 747 The Boeing 747 is a large, long-range wide-body airliner designed and manufactured by Boeing Commercial Airplanes in the United States between 1968 and 2022. After introducing the 707 in October 1958, Pan Am wanted a jet times its size, t ...
was estimated at $26.5 million in 2011 dollars.


Payload hardware

*
Spacelab Spacelab was a reusable laboratory developed by European Space Agency (ESA) and used on certain spaceflights flown by the Space Shuttle. The laboratory comprised multiple components, including a pressurized module, an unpressurized carrier, ...
Pallet ''Elvis'' – handed over to the
Swiss Museum of Transport The Swiss Museum of Transport or Verkehrshaus der Schweiz (literally "Transportation House of Switzerland") in Lucerne opened in July 1959 and exhibits all forms of transport including trains, automobiles, ships and aircraft as well as communicati ...
, Switzerland, in March 2010. * One of the two Spacelabs—on display at
Bremen Airport Bremen Airport (German: ''Flughafen Bremen'', ) is the international airport of the city and state of Bremen in Northern Germany. It is located south of the city and handled 2.66 million passengers in 2015. It mainly features flights to Europ ...
, Germany. * Another Spacelab is on display at the Udvar-Hazy center behind ''Discovery'' *
MPLM A Multi-Purpose Logistics Module (MPLM) is a large pressurized container that was used on Space Shuttle missions to transfer cargo to and from the International Space Station (ISS). Two MPLMs made a dozen trips in the Shuttle cargo bay and init ...
''Leonardo'': converted to the ISS
Permanent Multipurpose Module The ''Leonardo'' Permanent Multipurpose Module (PMM) is a module of the International Space Station. It was flown into space aboard the Space Shuttle ''Discovery'' on STS-133 on 24 February 2011 and installed on 1 March. ''Leonardo'' is primari ...
* MPLM ''Raffaello'': removed from the bay of ''Atlantis'', fate unknown * MPLM ''Donatello'': the unused MPLM, some parts were cannibalized for ''Leonardo''. The remainder is mothballed in the ISS processing facility at Kennedy Space Center. * Various space pallets used since STS-1: the fates of these objects range from space center storage to scrap to museum pieces


Tiles

NASA ran a program to donate
thermal protection system Atmospheric entry is the movement of an object from outer space into and through the gases of an atmosphere of a planet, dwarf planet, or natural satellite. There are two main types of atmospheric entry: ''uncontrolled entry'', such as the entr ...
tiles to schools and universities for US$23.40 each (the fee for shipping and handling). About 7000 tiles were available on a
first-come, first-served Queueing theory is the mathematical study of waiting lines, or queues. A queueing model is constructed so that queue lengths and waiting time can be predicted. Queueing theory is generally considered a branch of operations research because the ...
basis, but limited to one per institution. Each orbiter incorporated over 21,000 tiles.


RS-25

About 42 reusable
RS-25 The Aerojet Rocketdyne RS-25, also known as the Space Shuttle Main Engine (SSME), is a liquid-fuel cryogenic rocket engine that was used on NASA's Space Shuttle and is currently used on the Space Launch System (SLS). Designed and manufacture ...
engines have been part of the STS program, with three used per orbiter per mission. The decision was made to retain sixteen engines with plans to make use of them on the Space Launch System. The rest were donated to the
Kennedy Space Center Visitor Complex The Kennedy Space Center Visitor Complex is the visitor center at NASA's Kennedy Space Center on Merritt Island, Florida. It features exhibits and displays, historic spacecraft and memorabilia, shows, two IMAX theaters, and a range of bus to ...
, Johnson Space Center
Space Center Houston Space Center Houston is a science museum that serves as the official visitor center of NASA Johnson Space Center in Houston. It was designated a Smithsonian Affiliate museum in 2014. The organization is owned by NASA, and operated under a co ...
, the
National Air and Space Museum The National Air and Space Museum of the Smithsonian Institution, also called the Air and Space Museum, is a museum in Washington, D.C., in the United States. Established in 1946 as the National Air Museum, it opened its main building on the Nat ...
, and other exhibits around the country.


RS-25 nozzles

Worn out engine nozzles are typically considered scrap, although nine nozzles were refurbished for display on the donated orbiters, so the actual engines can be retained by NASA.


Canadarm (SRMS) and OBSS

Three Shuttle arms were used by NASA; the arms of both ''Discovery'' and ''Atlantis'' will be left in place for their museum display. ''Endeavours arm is to be removed from the orbiter for separate display in Canada. The OBSS extension of ''Endeavour''s arm was left on the International Space Station, for use with the station's robotic arm.


Information technology

In December 2010, as NASA prepared for the STS program ending, an audit by the NASA
Office of Inspector General In the United States, Office of Inspector General (OIG) is a generic term for the oversight division of a federal or state agency aimed at preventing inefficient or unlawful operations within their parent agency. Such offices are attached to ma ...
(OIG) found that information technology had been sold or prepared for sale that still contained sensitive information. NASA OIG recommended NASA be more careful in the future.


Other shuttle hardware


Kennedy Space Center Launch Complex 39 Launch Complex 39 (LC-39) is a rocket launch site at the John F. Kennedy Space Center on Merritt Island in Florida, United States. The site and its collection of facilities were originally built as the Apollo program's "Moonport" and later m ...

The twin pads originally built for the Apollo program are now inactive. LC-39B was deactivated first on January 1, 2007. Three lightning towers were added to the pad and it was temporarily "re-activated" in April 2009 when ''Endeavour'' was placed on standby to rescue the
STS-125 STS-125, or HST-SM4 (Hubble Space Telescope Servicing Mission 4), was the fifth and final Space Shuttle mission to the Hubble Space Telescope (HST) and the last solo flight of the Space Shuttle Atlantis, Space Shuttle ''Atlantis''. The launch of ...
crew (the STS-125 mission was the last to visit the
Hubble Space Telescope The Hubble Space Telescope (often referred to as HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope, but it is one of the largest and most versa ...
, which meant that the ISS was out of range) if needed; ''Endeavour'' was then moved over to LC-39A for STS-126. In October 2009 the prototype
Ares I-X Ares I-X was the first-stage prototype and design concept demonstrator of Ares I, a launch system for human spaceflight developed by the National Aeronautics and Space Administration (NASA). Ares I-X was successfully launched on October 28, 200 ...
rocket was launched from 39B. The pad was then permanently deactivated and has since been dismantled and is being modified for the
Space Launch System The Space Launch System (SLS) is an American super heavy-lift expendable launch vehicle developed by NASA. As of 2022, SLS has the highest payload capacity of any rocket in operational service, as well as the greatest liftoff thrust of any r ...
program, and possibly other launch vehicles. Like the Apollo structures before them, the shuttle structures were scrapped. 39A was deactivated in July 2011 after STS-135 was launched. By 2012, NASA came to the conclusion that it would incur material cost to maintain LC-39A even in an inactive state and decided to seek interest of others to lease the pad for their use. NASA solicited and SpaceX won the competition for use of LC-39A. Blue Origin protested the decision to the General Accounting Office (GAO) generating uncertainty of the intent of NASA in the event that a commercial user or users could not be acquired. On January 16, 2013, one or more news outlets erroneously reported that NASA planned to abandon the pad; NASA was quick to clarify and identify that the actual plan was to, like pad B, convert it for other rockets without dismantling it. If NASA did plan to permanently decommission the pads, they would have to restore them to their original Apollo-era appearance, as both pads are on the
National Historic Register The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance or "great artistic v ...
. SpaceX has since converted the pad to launch Falcon Heavy and crewed Crew Dragon Falcon 9 flights. Following the destruction of
Space Launch Complex 40 Space Launch Complex 40 (SLC-40), previously Launch Complex 40 (LC-40) is a launch pad for rockets located at the north end of Cape Canaveral Space Force Station, Florida. The launch pad was used by the United States Air Force for 55 Titan III a ...
in an on-pad explosion in September 2016, SpaceX had to move all east coast launches to 39A while SLC-40 was being rebuilt. The first launch,
Dragon A dragon is a reptilian legendary creature that appears in the folklore of many cultures worldwide. Beliefs about dragons vary considerably through regions, but dragons in western cultures since the High Middle Ages have often been depicted as ...
resupply vehicle carried by a Falcon 9, occurred February 12, 2017. This flight was the first uncrewed launch from Complex 39 since Skylab was launched in 1973. Once SLC-40 was reactivated, SpaceX finished modifying the pad for Falcon Heavy. Due to SLC-40s destruction, 39A had to be rushed into service, and activities such as dismantling the RSS were put on hold. for the first few missions from 39A, even after SLC-40 was reactivated, SpaceX dismantled the RSS between launches and added black cladding to the fixed service structure.


Vehicle Assembly Building The Vehicle Assembly Building (originally the Vertical Assembly Building), or VAB, is a large building at NASA's Kennedy Space Center (KSC), designed to assemble large pre-manufactured space vehicle components, such as the massive Saturn V and th ...

After STS-135, the VAB was used as a storage shed for the decommissioned shuttles before they were sent to museums. NASA awarded a contract in March 2014 for design and build/delivery of VAB High Bay 3 modifications to support the SLS program. In February 2017, the contractor team completed platform installation to enable SLS stacking. SLS/Artemis 1 mission processed through VAB Bay 3 prior to its launch in November 2022. Other VAB bays, such as High Bay 2, are being be made available by NASA for other programs.


NASA's Mobile Launcher Platform

Three mobile launcher platforms used to support the Space Shuttle will be used for commercial launch vehicles. The Mobile Launcher Platform-1 (MLP-1) was used for 62 Shuttle launches, starting in 1981. It was the most used of the three MLPs. The
Ares I-X Ares I-X was the first-stage prototype and design concept demonstrator of Ares I, a launch system for human spaceflight developed by the National Aeronautics and Space Administration (NASA). Ares I-X was successfully launched on October 28, 200 ...
suborbital mission utilized the MLP-1 to support the stacking and launch operations. The canceled Ares I-Y would have used the same MLP. Following the
STS-135 STS-135 ( ISS assembly flight ULF7) was the 135th and final mission of the American Space Shuttle program. It used the orbiter ''Atlantis'' and hardware originally processed for the STS-335 contingency mission, which was not flown. STS-135 la ...
, usable parts from MLP-1 were removed and stored in the Vehicle Assembly Building, with no plans to use the MLP again. eventually the MLP was weighed down with concrete blocks and used for conditioning the crawlerway for SLS as of September 2021. Mobile Launcher Platform-2 (MLP-2) was used for 44 Shuttle launches, starting in 1983. All of the orbiters except made their maiden flights from MLP-2. It was also the launch site for the ill-fated STS-51L mission, when disintegrated shortly after launch, killing all seven crew members. in January 2021 MLP-2 was scrapped, as with 2 more MLPs for SLS under construction, NASA was running out of places to store the launch platforms. Mobile Launcher Platform-3 (MLP-3) was used for 29 Shuttle launches, starting in 1990. It was the least used of the three MLPs. The MLP-3 was acquired by
Orbital ATK Northrop Grumman Innovation Systems (NGIS) was a sector (business segment) of Northrop Grumman from 2018 through 2019. It was formed from Orbital ATK Inc. a company which resulted from the merger of Orbital Sciences Corporation and parts of Alli ...
(who was later bought out by
Northrop Grumman Northrop Grumman Corporation is an American multinational aerospace and defense technology company. With 90,000 employees and an annual revenue in excess of $30 billion, it is one of the world's largest weapons manufacturers and military techn ...
) to launch their future
OmegA Omega (; capital: Ω, lowercase: ω; Ancient Greek ὦ, later ὦ μέγα, Modern Greek ωμέγα) is the twenty-fourth and final letter in the Greek alphabet. In the Greek numeric system/isopsephy (gematria), it has a value of 800. The wo ...
rocket with. They will use the
Vehicle Assembly Building The Vehicle Assembly Building (originally the Vertical Assembly Building), or VAB, is a large building at NASA's Kennedy Space Center (KSC), designed to assemble large pre-manufactured space vehicle components, such as the massive Saturn V and th ...
High Bay 2 to assemble the rocket, and
crawler-transporter The crawler-transporters, formally known as the Missile Crawler Transporter Facilities, are a pair of tracked vehicles used to transport spacecraft from NASA's Vehicle Assembly Building (VAB) along the Crawlerway to Launch Complex 39. They were ...
1 to move the rocket to LC-39B for launch. unfortunately due to a lack of Federal Funds, Omega was cancelled in September 2020, leaving MLP-3 without a tenant.


Crawler-Transporter The crawler-transporters, formally known as the Missile Crawler Transporter Facilities, are a pair of tracked vehicles used to transport spacecraft from NASA's Vehicle Assembly Building (VAB) along the Crawlerway to Launch Complex 39. They were ...

The Crawler-Transporters were used as the mobile part of the pad with the Shuttles; the two vehicles were deactivated and are being upgraded for the
Space Launch System The Space Launch System (SLS) is an American super heavy-lift expendable launch vehicle developed by NASA. As of 2022, SLS has the highest payload capacity of any rocket in operational service, as well as the greatest liftoff thrust of any r ...
. The crawlerways used for transporting launch vehicles from the VAB to the twin pads of KSC are also being extensively renovated for the
Artemis program The Artemis program is a robotic and human Moon exploration program led by the United States' National Aeronautics and Space Administration (NASA) along with three partner agencies: European Space Agency (ESA), Japan Aerospace Exploration ...
.


Shuttle Carrier Aircraft The Shuttle Carrier Aircraft (SCA) are two extensively modified Boeing 747 airliners that NASA used to transport Space Shuttle orbiters. One (N905NA) is a 747-100 model, while the other (N911NA) is a short range 747-100SR. The SCAs were used t ...

Two modified
Boeing 747 The Boeing 747 is a large, long-range wide-body airliner designed and manufactured by Boeing Commercial Airplanes in the United States between 1968 and 2022. After introducing the 707 in October 1958, Pan Am wanted a jet times its size, t ...
s were used to fly the shuttles back to KSC when they landed at Edwards AFB. N911NA was retired on February 8, 2012 and is now a parts hulk for the
Stratospheric Observatory for Infrared Astronomy The Stratospheric Observatory for Infrared Astronomy (SOFIA) was an 80/20 joint project of NASA and the German Aerospace Center (DLR) to construct and maintain an airborne observatory. NASA awarded the contract for the development of the aircraf ...
. Beginning in September 2014, N911NA was loaned out to the Joe Davies Heritage Airpark, in Palmdale, CA, where it is on outdoor display next to a B-52. The other aircraft, N905NA was used to send ''Discovery'', ''Endeavour'' and ''Enterprise'' to their museums and in September 2012 was found to have few parts for SOFIA. It is currently a museum piece at the
Johnson Space Center The Lyndon B. Johnson Space Center (JSC) is NASA's center for human spaceflight (originally named the Manned Spacecraft Center), where human spaceflight training, research, and flight control are conducted. It was renamed in honor of the late U ...
, displayed carrying a full-scale replica of an orbiter.


NASA recovery ships

Used to retrieve the SRBs, MV ''Liberty Star'' and ''Freedom Star'' are now separated. ''Liberty Star'' was renamed as TV ''Kings Pointer'' and was transferred to the Merchant Marine Academy in New York for use as a training vessel. It will remain on call in case NASA needs it for further missions. ''Freedom Star'' was transferred to the
James River Reserve Fleet The James River Reserve Fleet (JRRF) is located on the James River in the U.S. state of Virginia at () near Fort Eustis. James River Reserve Fleet, a "ghost fleet,", is part of the National Defense Reserve Fleet. The Reserve Fleet ships in s ...
on September 28, 2012 and placed under ownership of the U.S. Maritime Administration (MARAD). In November 2016, MV Freedom Star was re-purposed as a training vessel to the Paul Hall Center for Maritime Training and Education, on loan from MARAD.


Orbiter Processing Facility Orbiter Processing Facility (OPF) is a class of hangars where U.S. Space Shuttle orbiters underwent maintenance between flights. They are located west of the Vehicle Assembly Building, where the orbiter was mated with its External Tank and Solid ...

The buildings used to process the shuttles after each mission were decommissioned. OPF-1 was leased to
Boeing The Boeing Company () is an American multinational corporation that designs, manufactures, and sells airplanes, rotorcraft, rockets, satellites, telecommunications equipment, and missiles worldwide. The company also provides leasing and product ...
in January 2014 for processing the
X-37B The Boeing X-37, also known as the Orbital Test Vehicle (OTV), is a reusable robotic spacecraft. It is boosted into space by a launch vehicle, then re-enters Earth's atmosphere and lands as a spaceplane. The X-37 is operated by the United State ...
spaceplane. Once the agreement for use was signed between NASA and the U.S. Air Force and made public, use of both OPF-1 and OPF-2 for X-37B was confirmed. OPF-3 was leased as well to Boeing for 15 years to use in the manufacture and test of the
CST-100 The Boeing CST-100 Starliner
is a class of two partially Shuttle Landing Facility The Shuttle Landing Facility (SLF) also known as Launch and Landing Facility (LLF) is an airport located on Merritt Island in Brevard County, Florida, United States. It is a part of the Kennedy Space Center and was used by Space Shuttle for ...

The runway at KSC is evolving as a Launch and Landing Facility (LLF) to support multiple users including a group of F-104 aircraft, use by launch providers for delivery of rocket stages by aircraft, availability for spaceflight horizontal launch and landing, and for other uses supporting both Kennedy Space Center and adjacent Cape Canaveral Space Force Station. It is used to land the X-37B and will be for
Sierra Nevada The Sierra Nevada () is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies primarily ...
Dream Chaser Dream Chaser is an American reusable lifting-body spaceplane being developed by Sierra Nevada Corporation (SNC) Space Systems. Originally intended as a crewed vehicle, the Dream Chaser Space System is set to be produced after the cargo varian ...
spaceplanes. The LLF received its first landing from space since ''Atlantis'' when the USAF X-37B landed on it at the end of almost two years in orbit in June 2017.


Former planned Space Shuttle successors

There were a number of proposals for space access systems in the 1970s also, such as the Rockwell '' Star-raker''. Star-raker was a large
single-stage to orbit A single-stage-to-orbit (SSTO) vehicle reaches orbit from the surface of a body using only propellants and fluids and without expending tanks, engines, or other major hardware. The term usually, but not exclusively, refers to reusable vehicles ...
(SSTO) design that used both rockets and ramjet for propulsion. It was a contemporary to the Boeing ''Reusable Aerodynamic Space Vehicle'', which was an all-rocket propulsion SSTO design. Some programs from the early 1980s were the ''Future Space Transportation System'' program and the later NASA ''Advanced Manned Launch System'' program.''Future Space Transportation System'' 1981-84
/ref> In the late 1980s, a planned successor to STS was called "Shuttle II", which encompassed a number of different ideas including smaller tanks over the wings and a detachable crew cabin for emergencies, and was influenced by the ''Challenger'' disaster.
/ref> At one point before retirement, extension of the Space Shuttle program for an additional five years while a replacement could be developed, was considered by the U.S. government. Some programs proposed to provide access to space after the shuttle were the
Lockheed Martin X-33 The Lockheed Martin X-33 was a proposed uncrewed, sub-scale technology demonstrator suborbital spaceplane that was developed for a period in the 1990s. The X-33 was a technology demonstrator for the VentureStar orbital spaceplane, which was pla ...
,
VentureStar VentureStar was a single-stage-to-orbit reusable launch system proposed by Lockheed Martin and funded by the U.S. government. The goal was to replace the Space Shuttle by developing a re-usable spaceplane that could launch satellites into orbit ...
, the
Orbital Space Plane Program The Orbital Space Plane (OSP) program was a NASA spaceplane concept in the early 2000s designed to support the International Space Station requirements for crew rescue, crew transport and contingency cargo transport. It was part of the Space Lau ...
, and
Ares I Ares I was the crew launch vehicle that was being developed by NASA as part of the Constellation program. The name "Ares" refers to the Greek deity Ares, who is identified with the Roman god Mars. Ares I was originally known as the "Crew Launch ...
launcher. For comparison to an earlier retirement, when the
Saturn IB The Saturn IB (also known as the uprated Saturn I) was an American launch vehicle commissioned by the NASA, National Aeronautics and Space Administration (NASA) for the Apollo program. It uprated the Saturn I by replacing the S-IV second stage (, ...
was last flown in 1975 for the Apollo-Soyuz Test Project, the Shuttle development program was already well underway. However, the Shuttle did not fly until 1981, which left a six-year gap in U.S. human spaceflight. Because of this and other reasons, in particular, higher than expected Solar activity that caused Skylab's orbit to decay faster than hoped, the U.S. space station
Skylab Skylab was the first United States space station, launched by NASA, occupied for about 24 weeks between May 1973 and February 1974. It was operated by three separate three-astronaut crews: Skylab 2, Skylab 3, and Skylab 4. Major operations in ...
burned up in the atmosphere.Edelson, Edward.
Saving Skylab: The untold story
''Popular Science'', January 1979.
The
Ares I Ares I was the crew launch vehicle that was being developed by NASA as part of the Constellation program. The name "Ares" refers to the Greek deity Ares, who is identified with the Roman god Mars. Ares I was originally known as the "Crew Launch ...
was going to be NASA's crewed spacecraft after STS, with Congress attempting to accelerate its development so it would be ready as early as 2016 for the ISS, in addition they attempted to delay retirement of the shuttle to reduce the time gap. However, Ares I was cancelled along with the rest of Constellation in 2010. The successor to the Space Shuttle after the cancellation would be commercial crew spacecraft, such as the
Dragon 2 Dragon 2 is a class of partially reusable spacecraft developed and manufactured by American aerospace manufacturer SpaceX, primarily for flights to the International Space Station (ISS). SpaceX has also launched private missions such as Ins ...
from
SpaceX Space Exploration Technologies Corp. (SpaceX) is an American spacecraft manufacturer, launcher, and a satellite communications corporation headquartered in Hawthorne, California. It was founded in 2002 by Elon Musk with the stated goal of ...
which first launched crew on May 30, 2020 as the
Demo-2 Crew Dragon Demo-2 (officially Crew Demo-2, SpaceX Demo-2, or Demonstration Mission-2) was the first crewed test flight of the Crew Dragon spacecraft. The spacecraft, named '' Endeavour'', launched on 30 May 2020 on a Falcon 9 booster, and carr ...
mission, and the
Boeing Starliner The Boeing CST-100 Starliner
is a class of two partially reusable spacecraft designed to transp ...
which is in development from
Boeing The Boeing Company () is an American multinational corporation that designs, manufactures, and sells airplanes, rotorcraft, rockets, satellites, telecommunications equipment, and missiles worldwide. The company also provides leasing and product ...
, while NASA's flagship in-house crewed missions will be aboard Orion on the SLS.


Constellation Program

Following the Space Shuttle ''Columbia'' disaster, in early 2003 President
George W. Bush George Walker Bush (born July 6, 1946) is an American politician who served as the 43rd president of the United States from 2001 to 2009. A member of the Republican Party, Bush family, and son of the 41st president George H. W. Bush, he ...
, announced his
Vision for Space Exploration Vision, Visions, or The Vision may refer to: Perception Optical perception * Visual perception, the sense of sight * Visual system, the physical mechanism of eyesight * Computer vision, a field dealing with how computers can be made to gain und ...
which called for the completion of the American portion of the International Space Station by 2010 (due to delays this would not happen until 2011), the retirement of the Space Shuttle fleet following its completion, to return to the moon by 2020 and one day to Mars. A new vehicle would need to be developed, it eventually was named the
Orion spacecraft Orion (officially Orion Multi-Purpose Crew Vehicle or Orion MPCV) is a Reusable spacecraft, partially reusable crewed spacecraft used in NASA's Artemis program. The spacecraft consists of a Crew Module (CM) space capsule designed by Lockheed ...
, a six-person variant would have serviced the ISS and a four-person variant would have traveled to the Moon. The
Ares I Ares I was the crew launch vehicle that was being developed by NASA as part of the Constellation program. The name "Ares" refers to the Greek deity Ares, who is identified with the Roman god Mars. Ares I was originally known as the "Crew Launch ...
would have launched Orion, and the
Ares V The Ares V (formerly known as the Cargo Launch Vehicle or CaLV) was the planned cargo launch component of the cancelled NASA Constellation program, which was to have replaced the Space Shuttle after its retirement in 2011. Ares V was also plan ...
heavy-lift vehicle (HLV) would have launched all other hardware. The Altair lunar lander would have landed crew and cargo onto the Moon. The Constellation program experienced many cost overruns and schedule delays, and was openly criticized by the subsequent U.S. President,
Barack Obama Barack Hussein Obama II ( ; born August 4, 1961) is an American politician who served as the 44th president of the United States from 2009 to 2017. A member of the Democratic Party, Obama was the first African-American president of the U ...
. In February 2010, the Obama administration proposed eliminating public funds for the Constellation program and shifting greater responsibility of servicing the ISS to private companies. During a speech at the Kennedy Space Center on April 15, 2010, President Obama proposed the design selection of the new HLV that would replace the Ares-V but would not occur until 2015. The
U.S. Congress The United States Congress is the legislature of the federal government of the United States. It is Bicameralism, bicameral, composed of a lower body, the United States House of Representatives, House of Representatives, and an upper body, ...
drafted the
NASA Authorization Act of 2010 The NASA Authorization Act of 2010 is a U.S. law authorizing NASA appropriations for fiscal years 2011, 2012, 2013 with the same top-line budget values as requested by US President Barack Obama. It resulted from the Augustine Commission's review o ...
and President Obama signed it into law on October 11 of that year. The authorization act officially cancelled the Constellation program. The development of the combination of Ares I and Orion was predicted to cost about US$50 billion. One of the issues with Ares I was the criticism of the second stage, which the post-cancellation
Liberty Liberty is the ability to do as one pleases, or a right or immunity enjoyed by prescription or by grant (i.e. privilege). It is a synonym for the word freedom. In modern politics, liberty is understood as the state of being free within society fr ...
proposal attempted to address by using a second stage from an Ariane 5. The Liberty proposal applied for but was not chosen for commercial crew. The other ongoing complaint was that it made more sense to make a man-rated version of the Atlas or Delta. The first crewed flight for Ares I was scheduled for March 2015, and one of its priorities was crew safety. One reason for the emphasis on safety was that it was envisioned in the aftermath of the ''Columbia'' disaster.


Current and future Space Shuttle successors


Soyuz

U.S. astronauts have continued to access the
ISS The International Space Station (ISS) is the largest modular space station currently in low Earth orbit. It is a multinational collaborative project involving five participating space agencies: NASA (United States), Roscosmos (Russia), JAXA (J ...
aboard the Russian
Soyuz spacecraft Soyuz () is a series of spacecraft which has been in service since the 1960s, having made more than 140 flights. It was designed for the Soviet space program by the Korolev Design Bureau (now Energia). The Soyuz succeeded the Voskhod spacecraf ...
. The Soyuz was chosen as the ISS lifeboat during the development of the International Space Station. The first NASA astronaut to launch on a Soyuz rocket was
Norman Thagard Norman Earl Thagard, M.D. (born July 3, 1943; Capt, USMC, Ret.), is an American scientist and former U.S. Marine Corps officer and naval aviator and NASA astronaut. He is the first American to ride to space on board a Russian vehicle, and ca ...
, as part of the Shuttle-''Mir'' program. Launching on March 14, 1995 on
Soyuz TM-21 Soyuz TM-21 was a crewed Soyuz spaceflight to ''Mir''. The mission launched from Baikonur Cosmodrome, atop a Soyuz-U2 carrier rocket, at 06:11:34 UTC on March 14, 1995. The flight marked the first time thirteen humans were flying in space simu ...
, he visited the ''
Mir ''Mir'' (russian: Мир, ; ) was a space station that operated in low Earth orbit from 1986 to 2001, operated by the Soviet Union and later by Russia. ''Mir'' was the first modular space station and was assembled in orbit from 1986 to&n ...
'' however he returned to Earth on the Space Shuttle mission
STS-71 STS-71 was the third mission of the US/Russian Shuttle-Mir Program and the first Space Shuttle docking to Russian space station ''Mir''. It started on June 27, 1995, with the launch of Space Shuttle ''Atlantis'' from launchpad 39A at the Kenn ...
. The start of regular use of the Soyuz began as part of the
International Space Station program The International Space Station programme is tied together by a complex set of legal, political and financial agreements between the fifteen nations involved in the project, governing ownership of the various components, rights to crewing and ...
, with
William Shepherd William McMichael "Bill" Shepherd (born July 26, 1949), (Capt, USN, Ret.), is an American former Navy SEAL, aerospace, ocean, and mechanical engineer, and NASA astronaut, who served as Commander of Expedition 1, the first crew on the Internatio ...
launching on
Soyuz TM-31 Soyuz TM-31 was the first Soyuz spaceflight to dock with the International Space Station (ISS). The spacecraft carried the members of Expedition 1, the first long-duration ISS crew. It was launched from Baikonur Cosmodrome in Kazakhstan at 07 ...
in October 2000. NASA has continued to take regular flights in the following two decades. NASA was contracted to use Soyuz seats until at least 2018. The consideration of Soyuz as a lifeboat began in the aftermath of the dissolution of the Soviet Union. Russia proposed using the Soyuz as a life boat for what was still Space Station Freedom in late 1991, leading to further analysis of this concept in the early 1990s. One of the milestones was in 1992, when after three months of negotiations the heads of the two Space Agencies agreed to study applications of the Soyuz spacecraft. Since the first NASA use of Soyuz in 1995, NASA astronauts have flown on the following Soyuz versions:
Soyuz-TM The Soyuz-TM were fourth generation (1986–2002) Soyuz spacecraft used for ferry flights to the Mir and International Space Station, ISS space stations. The Soyuz spacecraft consisted of three parts, the Orbital Module, the Descent Module and th ...
, Soyuz-TMA (and Soyuz TMA-M),
Soyuz MS The Soyuz MS (; GRAU: 11F732A48) is a revision of the Russian spacecraft series Soyuz first launched in 2016. It is an evolution of the Soyuz TMA-M spacecraft, with modernization mostly concentrated on the communications and navigation subsyste ...
(which had its first flight in 2016). NASA also purchased several space modules from Russia including ''
Spektr Spektr (russian: Спектр; en, Spectrum) (TKM-O, 77KSO, 11F77O) was the fifth module of the Mir Space Station. The module was designed for remote observation of Earth's environment containing atmospheric and surface research equipment. Sp ...
'',
Docking Module A docking compartment is a module of a space station to which visiting spacecraft can dock. Docking Compartment may refer to: * Docking Compartment 1 (Pirs) * Docking Compartment 2 (Poisk) See also * Mini-Research Modules * Mir Docking Module ...
(''Mir''), ''
Priroda The Priroda (russian: Природа; en, Nature) (TsM-I, 77KSI, 11F77I) module was the seventh and final module of the Mir Space Station. Its primary purpose was to conduct Earth resource experiments through remote sensing and to develop and ...
'', and '' Zarya''.


Orion and the SLS

The
NASA Authorization Act of 2010 The NASA Authorization Act of 2010 is a U.S. law authorizing NASA appropriations for fiscal years 2011, 2012, 2013 with the same top-line budget values as requested by US President Barack Obama. It resulted from the Augustine Commission's review o ...
required a new heavy–lift vehicle design to be chosen within 90 days of its passing. The authorization act called this new HLV the
Space Launch System The Space Launch System (SLS) is an American super heavy-lift expendable launch vehicle developed by NASA. As of 2022, SLS has the highest payload capacity of any rocket in operational service, as well as the greatest liftoff thrust of any r ...
(SLS). The
Orion spacecraft Orion (officially Orion Multi-Purpose Crew Vehicle or Orion MPCV) is a Reusable spacecraft, partially reusable crewed spacecraft used in NASA's Artemis program. The spacecraft consists of a Crew Module (CM) space capsule designed by Lockheed ...
was left virtually unchanged from its previous design. The Space Launch System will launch both Orion and other necessary hardware. The SLS is to be upgraded over time with more powerful versions. The initial version of SLS will be capable of lifting 70 tonnes into
low Earth orbit A low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less than 0.25. Most of the artificial objects in outer space are in LEO, with an altitude never mor ...
. It is then planned to be upgraded in various ways to lift 105 tonnes, and then, eventually, 130 tonnes.
Exploration Flight Test 1 Exploration Flight Test-1 or EFT-1 (previously known as Orion Flight Test 1 or OFT-1) was the first test flight of the crew module portion of the Orion Multi-Purpose Crew Vehicle. Without a crew, it was launched on December 5, 2014, at 12:0 ...
(EFT-1), an uncrewed test flight of Orion's crew module, launched on December 5, 2014 on a
Delta IV Heavy The Delta IV Heavy (Delta 9250H) is an Evolved Expendable Launch Vehicle, expendable heavy-lift launch vehicle, the largest type of the Delta IV family. It is the world's third highest-capacity launch vehicle in operation, behind NASA's Space L ...
rocket.
Artemis 1 Artemis 1, officially Artemis I and formerly Exploration Mission-1 (EM-1), was an uncrewed Moon-orbiting mission. As the first major spaceflight of NASA's Artemis program, Artemis 1 marked the return of the agency to lunar exploration original ...
is the first flight of the SLS and was launched in November 2022 as a test of the completed Orion and SLS system.
Artemis 2 Artemis 2 (officially Artemis II) is the second scheduled mission of NASA's Artemis program, and the first scheduled crewed mission of NASA's Orion spacecraft, currently planned to be launched by the Space Launch System (SLS) in May 2024. The c ...
, the first crewed mission of the program, will launch four astronauts in 2024 if all Artemis 1 flight objectives are met. The second mission will launch on a free-return flyby of the Moon at a distance of . After Artemis 2, the Power and Propulsion Element of the
Lunar Gateway The Lunar Gateway, or simply Gateway, is the first planned extraterrestrial space station in lunar orbit intended to serve as a solar-powered communication hub, science laboratory, and short-term habitation module for government-agency astr ...
and three components of an expendable lunar lander are planned to be delivered on multiple launches from commercial
launch service provider A launch service provider (LSP) is a type of company which specialises in launching spacecraft. In 2018, the launch services sector accounted for $5.5 billion out of a total $344.5 billion "global space economy". It is responsible for the ordering ...
s.
Artemis 3 Artemis 3 (officially Artemis III) is planned as the first crewed Moon landing mission of the Artemis program and the first crewed flight of the Starship HLS lander. Scheduled for launch in 2025, Artemis 3 is planned to be the second crewed Ar ...
is planned to launch in 2025 aboard a SLS Block 1 rocket and will use the minimalist Gateway and expendable lander to achieve the first crewed lunar landing of the program. The flight is planned to touch down on the
lunar south pole The lunar south pole is the southernmost point on the Moon, at 90°S. It is of special interest to scientists because of the occurrence of water ice in permanently shadowed areas around it. The lunar south pole region features craters that are ...
region, with two astronauts staying there for about one week.


ISS crew and cargo resupply

The ISS is planned to be funded until at least 2020. There has been discussion to extend it to 2028 or beyond. Until another U.S. crew vehicle is ready, crews will access the
ISS The International Space Station (ISS) is the largest modular space station currently in low Earth orbit. It is a multinational collaborative project involving five participating space agencies: NASA (United States), Roscosmos (Russia), JAXA (J ...
exclusively aboard the Russian
Soyuz spacecraft Soyuz () is a series of spacecraft which has been in service since the 1960s, having made more than 140 flights. It was designed for the Soviet space program by the Korolev Design Bureau (now Energia). The Soyuz succeeded the Voskhod spacecraf ...
. The Soyuz was chosen as the ISS lifeboat during the development of the International Space Station, and has been one of the space taxis used by the international participants to this program. A Soyuz took
Expedition 1 Expedition 1 was the first long-duration stay on the International Space Station (ISS). The three-person crew stayed aboard the station for 136 days, from November 2000 to March 2001. It was the beginning of an uninterrupted human presence on the ...
, which included one U.S. astronaut in the year 2000. Previously the United States and Russia had collaborated on extended the ''Mir'' space station with the Shuttle-''Mir'' program in the 1990s. Although the Orion spacecraft is oriented towards deep-space missions such as NEO visitation, it can also be used retrieve crew or supplies from the
ISS The International Space Station (ISS) is the largest modular space station currently in low Earth orbit. It is a multinational collaborative project involving five participating space agencies: NASA (United States), Roscosmos (Russia), JAXA (J ...
if that task is needed once the spacecraft is operational. However, the
Commercial Crew Program The Commercial Crew Program (CCP) provides commercially-operated crew transportation service to and from the International Space Station (ISS) under contract to NASA, conducting crew rotations between the expeditions of the International Sp ...
(CCP) produced a functioning crewed space vehicle starting operations in 2020, providing an alternative to Orion or Soyuz. The delay was longer than expected because the
Ares I Ares I was the crew launch vehicle that was being developed by NASA as part of the Constellation program. The name "Ares" refers to the Greek deity Ares, who is identified with the Roman god Mars. Ares I was originally known as the "Crew Launch ...
was cancelled in 2010, leaving little time before the STS retired for something new to be ready for flight. U.S. Congress was aware a spaceflight gap could occur and accelerated funding in 2008 and 2009 in preparation for the retirement of the Shuttle. At that time the first crewed flight of the planned Ares I launcher would not have occurred until 2015, and its first use at ISS until 2016. Another option that has been analyzed is to adapt Orion to a human-rated heavy launch vehicle like the Delta IV Heavy. (see also
Evolved Expendable Launch Vehicle National Security Space Launch (NSSL) — formerly Evolved Expendable Launch Vehicle (EELV) from 1994 to 2019 — is a program of the United States Space Force (USSF) intended to assure access to space for United States Department of Defense and ...
) Another spacecraft evaluated by NASA, and also for commercial crew, is the
OmegA Omega (; capital: Ω, lowercase: ω; Ancient Greek ὦ, later ὦ μέγα, Modern Greek ωμέγα) is the twenty-fourth and final letter in the Greek alphabet. In the Greek numeric system/isopsephy (gematria), it has a value of 800. The wo ...
rocket, which will look similar to Ares I and will based on
Space Shuttle Solid Rocket Booster The Space Shuttle Solid Rocket Booster (SRB) was the first solid-propellant rocket to be used for primary propulsion on a vehicle used for human spaceflight. A pair of these provided 85% of the Space Shuttle's thrust at liftoff and for the first ...
.


Commercial Resupply Services

The
Commercial Orbital Transportation Services Commercial Orbital Transportation Services (COTS) was a NASA program to coordinate the development of vehicles for the delivery of crew and cargo to the International Space Station by private companies. The program was announced on January 18, 200 ...
(COTS) development program began in 2006 with the purpose of creating commercially operated
automated cargo spacecraft Cargo spacecraft are robotic spacecraft that are designed to carry cargo, possibly to support space stations' operation by transporting food, propellant and other supplies. This is different from a space probe, whose missions are to conduct scien ...
to service the ISS. The program is a fixed–price milestone-based development program, meaning that each company that received a funded award had to have a list of milestones with a dollar value attached to them that they would not receive until after achieving the milestone. Private companies are also required to have some "skin in the game" which refers to raising additional private investment for their proposal. On December 23, 2008, NASA awarded Commercial Resupply Services contracts to
SpaceX Space Exploration Technologies Corp. (SpaceX) is an American spacecraft manufacturer, launcher, and a satellite communications corporation headquartered in Hawthorne, California. It was founded in 2002 by Elon Musk with the stated goal of ...
and
Orbital Sciences Corporation Orbital Sciences Corporation (commonly referred to as Orbital) was an American company specializing in the design, manufacture, and launch of small- and medium- class space and launch vehicle systems for commercial, military and other governmen ...
(with corporate mergers and acquisitions now
Northrop Grumman Northrop Grumman Corporation is an American multinational aerospace and defense technology company. With 90,000 employees and an annual revenue in excess of $30 billion, it is one of the world's largest weapons manufacturers and military techn ...
). SpaceX is using its
Falcon 9 Falcon 9 is a partially reusable medium lift launch vehicle that can carry cargo and crew into Earth orbit, produced by American aerospace company SpaceX. The rocket has two stages. The first (booster) stage carries the second stage and payl ...
rocket and
Dragon spacecraft American private space transportation company SpaceX has developed and produced several spacecraft named Dragon. The first family member, now referred to as Dragon 1, flew 23 cargo missions to the ISS between 2010 and 2020 before being retired ...
and Orbital Sciences (now Northrop Grumman) is using its
Antares Antares is the brightest star in the constellation of Scorpius. It has the Bayer designation α Scorpii, which is Latinised to Alpha Scorpii. Often referred to as "the heart of the scorpion", Antares is flanked by σ Scorpii and τ S ...
rocket and
Cygnus spacecraft Cygnus is an expendable American cargo spacecraft developed by Orbital Sciences Corporation and now manufactured and launched by Northrop Grumman Space Systems as part of NASA's Commercial Resupply Services (CRS) program. It is launched by Nor ...
. The first Dragon resupply mission occurred in May 2012. The first Cygnus resupply mission completed on 23 Oct 2013 after a flight that included remaining attached to the ISS for 23 days. The CRS program provides for all the projected U.S. cargo-transportation needs to the ISS, with the exception of a few vehicle–specific payloads to be delivered on the European ATV and the Japanese HTV.


Commercial Crew Program

The
Commercial Crew Program The Commercial Crew Program (CCP) provides commercially-operated crew transportation service to and from the International Space Station (ISS) under contract to NASA, conducting crew rotations between the expeditions of the International Sp ...
(CCP) was initiated in 2010 with the purpose of creating commercially operated crew vehicles capable of delivering at least four astronauts to the ISS, staying docked for 180 days and then returning them to Earth. Like COTS, CCP is a fixed–price milestone-based developmental program that requires some private investment. In the first phase of the program, NASA provided a total of $50 million divided among five U.S. companies, intended to foster research and development into human spaceflight concepts and technologies in the private sector. In 2011, during the second phase of the program, NASA provided $270 million divided among four companies. During the third phase of the program, NASA provided $1.1 billion divided among three companies. This phase of the CCP was expected to last from June 3, 2012 to May 31, 2014. The winners of that round were
SpaceX Dragon 2 Dragon 2 is a class of partially reusable spacecraft developed and manufactured by American aerospace manufacturer SpaceX, primarily for flights to the International Space Station (ISS). SpaceX has also launched Private spaceflight, private m ...
(derived from the Dragon cargo vehicle), Boeing's
CST-100 The Boeing CST-100 Starliner
is a class of two partially Dream Chaser Dream Chaser is an American reusable lifting-body spaceplane being developed by Sierra Nevada Corporation (SNC) Space Systems. Originally intended as a crewed vehicle, the Dream Chaser Space System is set to be produced after the cargo varian ...
. The
United Launch Alliance United Launch Alliance (ULA), legally United Launch Alliance, LLC, is an American spacecraft launch service provider that manufactures and operates a number of rocket vehicles that are capable of launching spacecraft into orbits around Earth, a ...
worked on human-rating their
Atlas V Atlas V is an expendable launch system and the fifth major version in the Atlas (rocket family), Atlas launch vehicle family. It was originally designed by Lockheed Martin, now being operated by United Launch Alliance (ULA), a joint venture be ...
rocket as part of the latter two proposals. Ultimately NASA selected the Crew Dragon and CST-100 Starliner with the Dream Chaser only receiving a cargo contract. The Crew Dragon began delivering crew in 2020, with the CST-100 completing its orbital flight test program in May 2022 with a crewed flight test expected in April 2023. On May 30, 2020, SpaceX launched Crew Dragon on the
Crew Dragon Demo-2 Crew Dragon Demo-2 (officially Crew Demo-2, SpaceX Demo-2, or Demonstration Mission-2) was the first crewed test flight of the Crew Dragon spacecraft. The spacecraft, named '' Endeavour'', launched on 30 May 2020 on a Falcon 9 booster, and carr ...
mission to the International Space Station. It carried a crew of two NASA astronauts,
Doug Hurley Douglas Gerald Hurley (born October 21, 1966) is an American engineer, former Marine Corps pilot and former NASA astronaut. He piloted Space Shuttle missions STS-127 (July 2009) and STS-135 (July 2011), the final flight of the Space Shuttle progr ...
and
Bob Behnken Robert Louis Behnken (; born July 28, 1970, in St. Ann, Missouri) is a NASA astronaut, engineer, and former Chief of the Astronaut Office. Behnken holds a Ph.D in mechanical engineering and the rank of colonel in the U.S. Air Force, where he se ...
, for a 62-day mission, which was incorporated as part of
Expedition 63 Expedition 63 was the 63rd long duration mission to the International Space Station, which began on 17 April 2020 with the undocking of the Soyuz MS-15 spacecraft and continued until the undocking of the Soyuz MS-16 spacecraft on 21 October 20 ...
. This was the first crewed launch of a US-built capsule since the Apollo-Soyuz Test project on July 15, 1975. Hurley, who was the pilot for ''Atlantis'' on the final Shuttle mission, STS-135, commanded the Demo-2 mission. Operational use of the Crew Dragon began with the launch of
SpaceX Crew-1 SpaceX Crew-1 (was also known as USCV-1 or simply Crew-1) was the first operational crewed flight of a Crew Dragon spacecraft, and the maiden flight of the Crew Dragon ''Resilience'' spacecraft. It was also the second crewed orbital flight l ...
, carrying four astronauts, on November 16, 2020. The crew would join
Expedition 64 Expedition 64 was the 64th long-duration expedition to the International Space Station (ISS), that began on 21 October 2020 with the undocking and departure of Soyuz MS-16. The Expedition started with the three crew members launched onboard So ...
. Of the crew, only Japanese astronaut
Soichi Noguchi is a Japanese aeronautical engineer and former JAXA astronaut. His first spaceflight was as a Mission Specialist aboard STS-114 on 26 July 2005 for NASA's first "return to flight" Space Shuttle mission after the ''Columbia'' disaster. He was a ...
had previously flown on the Space Shuttle.


Gallery


See also

*
Commercial Crew Development Development of the Commercial Crew Program began in the second round of the Commercial Crew Development (CCDev) program, which was rescoped from a technology development program for human spaceflight to a competitive development program that woul ...
*
Criticism of the Space Shuttle program Criticism of the Space Shuttle program stemmed from claims that NASA, NASA's Space Shuttle program failed to achieve its promised cost and utility goals, as well as design, cost, management, and safety issues. Fundamentally, it failed in the goal o ...
*
List of Russian human spaceflight missions This is a list of the human spaceflight missions conducted by the Russian Federal Space Agency since 1992. All Russian human spaceflight missions thus far have been carried out using the Soyuz vehicle, and all visited either Mir or the Internatio ...


References


External links


NASA Space Shuttle Portal
{{Use mdy dates, date=December 2018 Space Shuttle program 2011 in spaceflight Spacecraft endings 2011 disestablishments in the United States