Private spaceflight is flight beyond the Kármán line (above the nominal edge of space at 100 km (62 mi) Earth altitude )—or the development of new spaceflight technology—that is conducted and paid for by an entity other than a government agency.
In the early decades of the Space Age , the government space agencies of the Soviet Union and United States pioneered space technology in collaboration with affiliated design bureaus in the USSR and private companies in the US, entirely funding both the development of new spaceflight technologies and the operational costs of spaceflight. The European Space Agency was formed in 1975, largely following the same model of space technology development.
Later on, large defense contractors began to develop and operate space launch systems , derived from government rockets. Private spaceflight in Earth orbit includes communications satellites , satellite television , satellite radio , astronaut transport and sub-orbital and orbital space tourism .
In the 2000s, entrepreneurs began designing and—by the 2010s, deploying— competitive space systems to the national- monopoly governmental systems   of the early decades of the space age.  :7 These new offerings have brought about significant market competition in space launch services after 2010 that had not been present previously.
Successes to date include flying suborbital spaceplanes , launching orbital rockets , flying two orbital expandable test modules ( Genesis I and II ), and the successful development of first-stage orbital launch vehicles that are able to vertically land after a launch so as to enable reuse .
Planned private spaceflights beyond Earth orbit include personal spaceflights around the Moon .  Two private orbital habitat prototypes are already in Earth orbit, with larger versions to follow.  Planned private spaceflights beyond Earth orbit include solar sailing prototypes ( LightSail-3 ).
History of commercial space transportation
In a 2012 article in Bloomberg, author Michael Burgan asserted that there is a "grand tradition of private wealth furthering advances in rocketry and space exploration" dating back to the early rocketry experiments of Robert Goddard .
Despite those earlier private undertakings, during the principal period of spaceflight in the mid-twentieth century, only nation states developed and flew spacecraft above the Kármán line , the nominal boundary of space. Spaceflight was thus the monopoly province of a small group of national governments.
Both the U.S. civilian space program and Soviet space program were operated using mainly military pilots as astronauts . During this period, no commercial space launches were available to private operators, and no private organization was able to offer space launches. Eventually, private organizations were able to both offer and purchase space launches, thus beginning the period of private spaceflight.
The first phase of private space operation was the launch of the first commercial communications satellites . The U.S. Communications Satellite Act of 1962 opened the way to commercial consortia owning and operating their own satellites, although these were still launched on state-owned launch vehicles.
History of full private space transportation includes early efforts by Germany OTRAG company in the 20th century and numerous modern projects of orbital and suborbital launch systems in the 21st century. Last ones counts the manned programs also - most famous and important of them are suborbital flights of Virgin Galactic and orbital flights of SpaceX and other COTS participants.
Development of alternatives to government-provided space launch services began in earnest in the 2000s. Private interests began funding limited development programs, but the US government later sponsored a series of programs to incentivize and encourage private companies to begin offering both cargo, and later, crew space transportation services.
By 2012, a private company had begun transporting cargo to and from the International Space Station (ISS), while a second private company was scheduled to begin making deliveries in 2013, ushering in a time of regular private space cargo delivery to and return from the government-owned space facility in low-Earth orbit (LEO). In this new paradigm for LEO cargo transport, the government contracts for and pays for cargo services on substantially privately developed space vehicles rather than the government operating each of the cargo vehicles and cargo delivery systems . As of 2013, there is a mix of private and government resupply vehicles being used for the ISS, as the Russian Soyuz and Progress vehicles, and the European Space Agency (ESA) ATV (through 2014) and the Japanese Kounotori (through 2021) remain in operation after the 2011 retirement of the US Space Shuttle .
Wired magazine went so far as to say that 2012 was "the year of private space," recounting the success of SpaceX in conducting two launches to the International Space Station , with progress toward emerging competition in that industry sector, while also highlighting the well-funded capital and experienced engineering teams behind the startup companies Planetary Resources –asteroid mining–and Golden Spike –private human Lunar surface excursions.
Lower prices for launch services after 2010, and published prices for standard launch services, have brought about significant space launch market competition that had not been present previously.    
In June 2013, British newspaper The Independent claimed that "the space race is flaring back into life, and it's not massive institutions such as Nasa that are in the running. The old view that human space flight is so complex, difficult and expensive that only huge government agencies could hope to accomplish it is being disproved by a new breed of flamboyant space privateers, who are planning to send humans out beyond the Earth's orbit for the first time since 1972,"  particularly noting projects underway by Mars One , Inspiration Mars Foundation , Bigelow Aerospace and SpaceX . 
On 26 March 1980, the European Space Agency created Arianespace , a company to be operated commercially after initial hardware and launch facilities were developed with government funding.  Arianespace produces, operates and markets the Ariane launcher family. By 1995 Arianespace lofted its 100th satellite and by 1997 the Ariane rocket had its 100th launch.  Arianespace's 23 shareholders represent scientific, technical, financial and political entities from 10 different European countries. 
OTRAG , a German company founded in 1975, which proposed a radically different, modular rocket design using large numbers of common core boosters. Under political pressure, the project was discontinued in the 1980s.
(c) Commercial Use of Space.--Congress declares that the general welfare of the United States requires that the Administration seek and encourage, to the maximum extent possible, the fullest commercial use of space.
Yet one of NASA's early actions was to effectively ban private space flight through a mountain of red tape. From the beginning, though, this met significant opposition not only by the private sector, but in Congress. In 1962, Congress passed its first law pushing back the prohibition on private involvement in space, the Communications Satellite Act of 1962 . While largely focusing on the satellites of its namesake, this was described by both the law's opponents and advocates of private space, as the first step on the road to privatization.
While launch vehicles were originally bought from private contractors, from the beginning of the Shuttle program until the Challenger disaster in 1986, NASA attempted to position its shuttle as the sole legal space launch option.  But with the mid-launch explosion/loss of Challenger came the suspension of the government -operated shuttle flights, allowing the formation of a commercial launch industry. 
On 30 October 1984, United States President Ronald Reagan signed into law the Commercial Space Launch Act .  This enabled an American industry of private operators of expendable launch systems . Prior to the signing of this law, all commercial satellite launches in the United States were restricted by Federal regulation to NASA's Space Shuttle .
On 5 November 1990, United States President George H. W. Bush signed into law the Launch Services Purchase Act .  The Act, in a complete reversal of the earlier Space Shuttle monopoly, ordered NASA to purchase launch services for its primary payloads from commercial providers whenever such services are required in the course of its activities.
Nonetheless, until 2004 NASA kept private space flight effectively illegal.  But that year, the Commercial Space Launch Amendments Act of 2004 required that NASA and the Federal Aviation Administration legalize private space flight.  The 2004 Act also specified a "learning period" which restricted the ability of the FAA to enact regulations regarding the safety of people who might actually fly on commercial spacecraft through 2012, ostensibly because spaceflight participants would share the risk of flight through informed consent procedures of human spaceflight risks, while requiring the launch provider to be legally liable for potential losses to uninvolved persons and structures. 
To the end of 2014, commercial passenger flights in space has remained effectively illegal, as the FAA has refused to give a commercial operator's license to any private space company. 
The United States updated US commercial space legislation with the passage of the SPACE Act of 2015 in November 2015.  The full name of the act is Spurring Private Aerospace Competitiveness and Entrepreneurship Act of 2015
The update US law explicitly allows "US citizens to engage in the commercial exploration and exploitation of 'space resources' [including ... water and minerals]." The right does not extend to biological life , so anything that is alive may not be exploited commercially. The Act further asserts that "the United States does not [(by this Act)] assert sovereignty , or sovereign or exclusive rights or jurisdiction over, or the ownership of, any celestial body ."
The SPACE Act includes the extension of indemnification of US launch providers for extraordinary catastrophic third-party losses of a failed launch through 2025, while the previous indemnification law was scheduled to expire in 2016. The Act also extends, through 2025, the "learning period" restrictions which limit the ability of the FAA to enact regulations regarding the safety of spaceflight participants . 
Indemnification for extraordinary third-party losses has, as of 2015, been a component of US space law for over 25 years, and during this time, "has never been invoked in any commercial launch mishap." 
In 1992, Resurs-500 capsule containing gifts was launched from Plesetsk Cosmodrome in what was a private spaceflight called Europe-America 500 . The flight was conceived by the Russian Foundation for Social Inventions and TsSKB-Progress , a Russian rocket-building company, to increase trade between Russia and USA, and promote use of technology once reserved only for military forces. Money for the launch was raised from a collection of Russian companies. The capsule parachuted into the Pacific Ocean and was brought to Seattle by a Russian missile-tracking ship.
The Russian government sold part of its stake in RSC Energia to private investors in 1994. Energia together with Khrunichev constituted most of the Russian manned space program. In 1997, the Russian government sold off enough of its share to lose the majority position.
In 1996 the United States government selected Lockheed Martin and Boeing to each develop Evolved Expendable Launch Vehicles (EELV) to compete for launch contracts and provide assured access to space. The government's acquisition strategy relied on the strong commercial viability of both vehicles to lower unit costs. This anticipated market demand did not materialize, but both the Delta IV and Atlas V EELVs remain in active service.
In 2003 Arianespace joined with Boeing Launch Services and Mitsubishi Heavy Industries to create the Launch Services Alliance . In 2005, continued weak commercial demand for EELV launches drove Lockheed Martin and Boeing to propose a joint venture called the United Launch Alliance to service the United States government launch market. 
Since the 1980s, various private initiatives have started up to pursue the private use of space . The first privately funded rocket to achieve spaceflight was Conestoga I , which was launched by Space Services Inc. on a suborbital flight to 309 km (192 mi) altitude on 9 September 1982.  
In the early 2000s, several public-private partnerships were established in the United States to take advantage of entrepreneurial companies to accelerate spaceflight technology development and reduce the cost of access to space, both for cargo and passengers transport . In addition, several purely private initiatives have begun in the 2010s to develop various aspects of space technology such as reusable launch systems and private spaceflight endeavors to the inner solar system . 
On 17 December 2003—on the 100th anniversary of the Wright brothers first powered flight of an aircraft — SpaceShipOne , an experimental spaceplane piloted by Brian Binnie , made its first rocket-powered flight, the first privately built craft to ever achieve supersonic flight. :8 The next year, SpaceShipOne made three suborbital flights into space, becoming the first privately built and operated vehicle to achieve manned spaceflight.
In 2006, NASA initiated a program to purchase commercial rides to carry cargo to the International Space Station , while funding a portion of the development of new technology in a public-private partnership , initially with US$500 million of contracted development funds. :10
On 1 February 2010, United States President Barack Obama proposed in a speech that NASA exit the business of flying astronauts from Earth to low-Earth orbit —the locus of human spaceflight ever since the last Lunar manned mission in 1972—and move it to private companies who contract with the government to provide cargo resupply services to the ISS . The proposal acted on the findings of the 2009 Augustine Commission and built on the success of the Commercial Resupply Services that outsourced American cargo delivery to the International Space Station .'
In June 2012, private Dutch non-profit Mars One announced a private one-way (no return) human mission to Mars with the aim to establish a permanent human colony on Mars .  The plan is to send a communication satellite and path finder lander to the planet by 2016 and, after several stages, land four humans on the Martian surface for permanent settlement in 2023. A new set of four astronauts would then arrive every two years. 
In December 2012, a private US company, Golden Spike , announced plans for commercial human spaceflight missions to the Moon by no earlier than 2020. Their plan projects development budget of between $7 and $8 billion, followed by around $1.5 billion per each "two-human lunar surface mission".
Richard Branson , in his lifetime, is "determined to be a part of starting a population on Mars. I think its absolutely realistic. It will happen...I think over the next 20 years, we will take literally hundreds of thousands of people to space and that will give us the financial resources to do even bigger things" 
In February 2013, the US nonprofit Inspiration Mars Foundation announced a plan to send a married couple on a 2018 mission to travel to Mars and back to Earth on a 501-day round trip, with no landing planned on Mars.  The mission will take advantage of an infrequently occurring free return trajectory —a unique orbit opportunity which occurs only once every fifteen years—and will allow the space capsule to use the smallest possible amount of fuel to get it to Mars and back to Earth. The two-person American crew – a man and a woman – will orbit around Mars at a distance of 100 miles (160 km) of the surface.  "If anything goes wrong, the spacecraft should make its own way back to Earth — but with no possibility of any short-cuts home."
In May 2015, the Japanese legislature is considering legislation to allow private company spaceflight initiatives in Japan. 
Today many commercial space transportation companies offer launch services to satellite companies and government space organizations around the world. In 2005 there were 18 total commercial launches and 37 non-commercial launches. Russia flew 44% of commercial orbital launches, while Europe had 28% and the United States had 6%. 
In recent years, the funding to support private spaceflight has begun to be raised from a larger pool of sources than the relatively more limited sources of the 1990s. For example, as of June 2013 and in the United States alone, ten billionaires have made "serious investments in private spaceflight activities"  at six companies, including Stratolaunch Systems , Planetary Resources , Blue Origin , Virgin Galactic , SpaceX , and Bigelow Aerospace . The ten investors are Paul Allen , Larry Page , Eric E. Schmidt , Ram Shriram , Charles Simony , Ross Perot, Jr. , Jeff Bezos , Richard Branson , Elon Musk , and Robert Bigelow .
It is not yet clear to what extent these entrepreneurs see "legitimate business opportunity, [for example,] space tourism and other commercial activities in space, or [are] wealthy men seeking the exclusivity that space offers innovators and investors."  These investments are a "gamble", and may, or may not pay off. 
The space transport business serves primarily national government and large commercial customer segments. Launches of government payloads , including military, civilian and scientific satellites, is the largest market segment at nearly $100 billion a year. This segment is dominated by domestic favorites such as the United Launch Alliance for U.S. government payloads and Arianespace for European satellites. The commercial payload segment, valued at under $3 billion a year, is dominated by Arianespace , with over 50% of the market segment, followed by Russian launchers. See a complete list of launch systems .
US government commercial cargo services
The US government determined to begin a process to purchase orbital launch services for cargo deliveries to the International Space Station (ISS) beginning in the mid-2000s, rather than operate the launch and delivery services as they had with the Space Shuttle , which was to retire in less than half a decade, and ultimately did retire in 2011. On 18 January 2006, NASA announced an opportunity for US commercial providers to demonstrate orbital transportation services.  As of 2008, NASA planned to spend $500 million through 2010 to finance development of private sector capability to transport payloads to the International Space Station (ISS). This was considered more challenging than then-available commercial space transportation because it would require precision orbit insertion , rendezvous and possibly docking with another spacecraft. The commercial vendors competed in specific service areas. 
In August 2006, NASA announced that two relatively young aerospace companies, SpaceX and Rocketplane Kistler , had been awarded $278m and $207m, respectively, under the COTS program.  In 2008, NASA anticipated that commercial cargo delivery services to and return services from the ISS would be necessary through at least 2015. The NASA Administrator suggested that space transportation services procurement may be expanded to orbital fuel depots and lunar surface deliveries should the first phase of COTS prove successful. 
After it transpired that Rocketplane Kistler was failing to meet its contractual deadlines, NASA terminated their contract in August 2008, after only $32m had been spent. Several months later, in December 2008, NASA announced that they have awarded the remaining $170m to the Orbital Sciences Corporation to develop resupply services to the ISS. 
Commercial Space Station
Bigelow Aerospace is developing the Next-Generation Commercial Space Station , a private orbital space complex. The space station will be constructed of both Sundancer and BA 330 expandable spacecraft modules as well as a central docking node , propulsion , solar arrays , and attached crew capsules . As of July 2010, initial launch of space station components was planned for 2014, with portions of the station projected to be available for leased use as early as 2015. 
The Association of Spaceflight Professionals , originally incorporated as Astronauts for Hire , a 501(c)(3) nonprofit in the state of Florida, on April 12, 2010,   was established with the mission of training highly-skilled specialists as scientist-astronauts and making them available for hire. Research institutions, spaceflight companies and principal scientific investigators draw upon the guidance and expertise of professional astronauts to help plan, design and conduct experiments in suborbital, and eventual orbital spaceflight, rather than solely relying on their own personnel.
The organization has partnered with leading industry providers to offer various aspects of astronaut training, from survival and egress training to suborbital centrifuge experience, to prepare its candidates for the commercial space industry. Its flight members, as commercial scientist-astronauts, are vetted through a selective, multi-stage evaluation process modeled after the NASA Astronaut Corps , incorporating guidance, feedback and perspective from a selection panel of veteran NASA astronauts, astronaut trainers, and experienced spaceflight professionals. Several members were previously selected as finalists in national space agency astronaut recruitment campaigns;    one has previously flown in an orbital spaceflight mission aboard the International Space Station .  
The organization currently has more than 250 members from nineteen countries around the world,  drawn from backgrounds in defense, science, medicine, aerospace and engineering. Its members have an extensive track record of developing payloads and products for the space industry, including several experiments currently flying on the International Space Station .     Members participate in research at national space agencies, defense,  science and technology organizations, and have given inspirational talks around the globe. 
Lunar private ventures
Robotic Lunar-surface missions
Private Lunar-surface crewed expeditions
- Shackleton Energy Company  intends to undertake human tended lunar prospecting for water ice. If significant reserves of ice are located, they plan to establish a network of "refueling service stations" in low Earth orbit and on the moon to process and provide fuel and consumables for commercial and government customers. If the prospecting is successful—ice deposits are located, the appropriate legal regime is in place to support commercial development, and the ice can be extracted — Shackleton proposes to establish a fuel-processing operation on the lunar surface and in propellant depots in Low Earth Orbit. Equipment would melt the ice and purify the water, "electrolyze the water into gaseous hydrogen and oxygen, and then condense the gases into liquid hydrogen and liquid oxygen and also process them into hydrogen peroxide, all of which could be used as rocket fuels.
- Golden Spike Company
Emerging personal spaceflight
Before 2004, the year it was legalized in the US, no privately operated manned spaceflight had ever occurred. The only private individuals to journey to space went as space tourists in the Space Shuttle or on Russian Soyuz flights to Mir or the International Space Station .
All private individuals who flew to space before Dennis Tito 's self-financed International Space Station visit in 2001 had been sponsored by their home governments or by private corporations.  Those trips include US Congressman Bill Nelson's January 1986 flight on the Space Shuttle Columbia and Japanese television reporter Toyohiro Akiyama 's 1990 flight to the Mir Space Station.
The Ansari X PRIZE was intended to stimulate private investment in the development of spaceflight technologies. 21 June 2004, test flight of SpaceShipOne , a contender for the X PRIZE, was the first human spaceflight in a privately developed and operated vehicle.
On 27 September 2004, following the success of SpaceShipOne, Richard Branson , owner of Virgin and Burt Rutan , SpaceShipOne's designer, announced that Virgin Galactic had licensed the craft's technology, and were planning commercial space flights in 2.5 to 3 years. A fleet of five craft ( SpaceShipTwo , launched from the WhiteKnightTwo carrier airplane) were to be constructed, and flights would be offered at around $200,000 each, although Branson said he planned to use this money to make flights more affordable in the long term. A test flight of SpaceShipTwo crashed in October 2014.
In December 2004, United States President George W. Bush signed into law the Commercial Space Launch Amendments Act.  The Act resolved the regulatory ambiguity surrounding private spaceflights and is designed to promote the development of the emerging U.S. commercial human space flight industry.
On 12 July 2006, Bigelow Aerospace launched the Genesis I , a subscale pathfinder of an orbital space station module. Genesis II was launched on 28 June 2007, and there are plans for additional prototypes to be launched in preparation for the production model BA 330 spacecraft.
On 28 September 2006, Jim Benson , SpaceDev founder, announced he was founding Benson Space Company with the intention of being first to market with the safest and lowest cost suborbital personal spaceflight launches, using the vertical takeoff and horizontal landing Dream Chaser vehicle based on the NASA HL-20 Personnel Launch System vehicle.
In December 2012, the Golden Spike Company announced plans to privately transport space exploration participants to the surface of the Moon and return, beginning as early as 2020, for US$750 million per passenger.
The Planetary Society , a nonprofit space research and advocacy organization, has sponsored a series of small satellites to test the feasibility of solar sailing . Their first such project, Cosmos 1 , was launched in 2005 but failed to reach space, and was succeeded by the Lightsail series, the first of which launched on 20 May 2015. A second spacecraft is expected to launch in 2016 on a more complex mission. 
Copenhagen Suborbitals is a crowd funded amateur manned space programme. As of 2016 it has flown four home-built rockets and two mock-up space capsules.
Many have speculated on where private spaceflight may go in the near future. Numerous projects of orbital and suborbital launch systems for satellites and manned flights exist. Some orbital manned missions would be state-sponsored like most COTS participants. (that develop their own launch systems). Another possibility is for paid suborbital tourism on craft like those from Virgin Galactic , Space Adventures , RocketShip Tours , ARCASPACE , PlanetSpace - Canadian Arrow , British Starchaser Industries or non-commercial like Copenhagen Suborbitals . Additionally, suborbital spacecraft have applications for faster intercontinental package delivery and passenger flight.
Private orbital spaceflight, space stations
Plans and a full-scale prototype for the SpaceX Dragon , a capsule capable of carrying up to 7 passengers, were announced in March 2006,  and Dragon version 2 flight hardware was unveiled in May 2014.  As of September 2014, both SpaceX and Boeing have received contracts from NASA to complete building, testing, and flying up to six flights of human-rated space capsules to the International Space Station beginning in 2017. 
In December 2010, SpaceX launched the second Falcon 9 and the first operational Dragon spacecraft. The mission was deemed fully successful, marking the first launch to space, atmospheric reentry and recovery of a capsule by a private company. Subsequent COTS missions included increasingly complex orbital tasks, culminating in Dragon first docking to the ISS in 2012.
Bigelow Aerospace develops BA 330 module (based on the former NASA TransHab design) intended to be used for activities like microgravity research, space manufacturing, and space tourism with modules serving as orbital "hotels". To promote private manned launch efforts, Bigelow offered the US$50 million America's Space Prize for the first US-based privately funded team to launch a manned reusable spacecraft to orbit on or before 10 January 2010; such feat is yet to be achieved as of December 2015.
The British Government partnered in 2015 with the ESA to promote a possibly commercial single-stage to orbit spaceplane concept called Skylon .  This design was pioneered by the privately held Reaction Engines Limited ,   a company founded by Alan Bond after HOTOL was canceled. 
As of 2012, there is commercial/private access to the U.S. National Laboratory space on the International Space Station (ISS) through the private company NanoRacks . Science experiments can be conducted on a variety of standard rack-sized experimental platforms with standard interfaces for power and data acquisition.
On-orbit propellant depots
In a presentation given 15 November 2005, to the 52nd Annual Conference of the American Astronautical Society , NASA Administrator Michael D. Griffin suggested that establishing an on-orbit propellant depot is, "Exactly the type of enterprise which should be left to industry and to the marketplace."  At the Space Technology and Applications International Forum in 2007, Dallas Bienhoff of Boeing made a presentation detailing the benefits of propellant depots.  Shackleton Energy Company has established operational plans, an extensive teaming and industrial consortium for developing LEO Propellant Depots supplied by Lunar polar sourced water ice. 
Some have speculated on the profitability of mining metal from asteroids . According to some estimates, a one kilometer-diameter asteroid would contain 30 million tons of nickel, 1.5 million tons of metal cobalt and 7,500tons of platinum ; the platinum alone would have a value of more than $150 billion at 2008 terrestrial prices. 
Energy from space
Future energy development may use energy sources in space and on other planets. Examples include Helium-3 extraction from the Moon, and solar power satellite systems. See space manufacturing for more on extraterrestrial economic development .
A space elevator system is a possible launch system, currently under investigation by at least one private venture.  There are concerns over cost, general feasibility and some political issues. On the plus side the potential to scale the system to accommodate traffic would (in theory) be greater than some other alternatives. Some factions contend that a space elevator—if one were successful—would not supplant existing launch solutions, but complement them.
Venture capital investment
Since 2005, there has been US$10 billion of private capital invested in the space sector,  most of it in the United States which liberalized private space sector investment beginning in the 1980s,  with additional legislative reforms in the 1990s–2000s.    From 2000 through the end of 2015, a total of US$13.3 billion of investment finance has been invested in the space sector, with US$2.9 billion of that being venture capital . 
In 2015 alone, venture capital firms invested US$1.8 billion in private spaceflight companies, more than they had in the previous 15 years combined.  As of October 2015, the largest and most active investors in space were Lux Capital , Bessemer Venture Partners , Khosla , Founders Fund , RRE Ventures and Draper Fisher Jurvetson . 
Some investors see the traditional spaceflight industry as ripe for disruption , with "a 100-fold improvement [relatively straightforward and] a thousand-fold improvement [possible]." Increasing interest by investors in economically driven spaceflight had begun to appear by 2016, and some space ventures have had to turn away investor funding. 
Failed spaceflight ventures
After earlier first effort of OTRAG , in the 1990s the projection of a significant demand for communications satellite launches attracted the development of a number of commercial space launch providers. The launch demand largely vanished when some of the largest satellite constellations, such as 288 satellite Teledesic network, were never built.
In 1996 NASA selected Lockheed Martin Skunk Works to build the X-33 VentureStar prototype for a single stage to orbit ( SSTO ) reusable launch vehicle . In 1999, the subscale X-33 prototype's composite liquid hydrogen fuel tank failed during testing. At project termination on 31 March 2001, NASA had funded $912 million of this wedge shaped spacecraft while Lockheed Martin financed $357 million of it.  The VentureStar was to have been a full-scale commercial space transport operated by Lockheed Martin.
In 1997 Beal Aerospace proposed the BA-2, a low-cost heavy-lift commercial launch vehicle. On 4 March 2000, the BA-2 project tested the largest liquid rocket engine built since the Saturn V .  In October 2000, Beal Aerospace ceased operations citing a decision by NASA and the Department of Defense to commit themselves to the development of the competing government-financed EELV program. 
In 1998 Rotary Rocket proposed the Roton, a Single Stage to Orbit ( SSTO ) piloted Vertical Take-off and Landing ( VTOL ) space transport.  A full scale Roton Atmospheric Test Vehicle flew three times in 1999. After spending tens of millions of dollars in development the Roton failed to secure launch contracts and Rotary Rocket ceased operations in 2001.
Excalibur Almaz had plans in 2007 to launch a modernized TKS Spacecraft (for Almaz space station), for tourism and other uses. It was to feature the largest window ever on a spacecraft. Their equipment was never launched, and their hangar facility closed in 2016. It is to be converted into an educational exhibit. 
- Armadillo Aerospace
- Association of Spaceflight Professionals
- Astrobotic Technology
- Beal Aerospace
- Blue Origin
- Commercial Spaceflight Federation
- Copenhagen Suborbitals
- Effect of spaceflight on the human body
- Garvey Spacecraft 
- Health threat from cosmic rays
- Heinlein Prize for Advances in Space Commercialization
- Human spaceflight
- Inspiration Mars Foundation
- L5 Society
- Mars One
- Masten Space Systems
- Orbital Sciences Corporation
- Planetary Resources
- Rocketplane Kistler
- RocketShip Tours
- Rotary Rocket
- Shackleton Energy Company
- Space Adventures
- Space Frontier Foundation
- Space medicine
- Starchaser Industries
- Virgin Galactic
- X Prize Foundation
- Interorbital Systems
- Armadillo Aerospace Black Armadillo - Suborbital Capsule
- ARCASPACE Stabilo and ORIZONT - Suborbital Capsule and Spaceplane
- Blue Origin New Shepard - Suborbital Capsule
- Boeing CST-100 - Orbital Capsule
- Copenhagen Suborbitals HEAT1X and Tycho Brahe - Suborbital Capsule
- Excalibur Almaz - Orbital Capsule
- PlanetSpace Canadian Arrow - Suborbital Capsule
- PlanetSpace Silver Dart - Orbital Spaceplane
- Reaction Engines Skylon - Single-Stage-To-Orbit Spaceplane
- Scaled Composites SpaceShipOne - Suborbital Spaceplane
- Scaled Composites / Virgin Galactic SpaceShipTwo - Suborbital Spaceplane
- SpaceDev Dream Chaser - Orbital Spaceplane
- SpaceX Dragon - Orbital Capsule
- Starchaser Industries Thunderbird and Thunderstar - Suborbital Capsule