Space Station or Space Complex Alpha, proposed private space habitat scheduled for 2021 initial deployment although this is currently on hold as a result of Bigelow temporarily laying off their entire staff due to the COVID-19 pandemic. A Bigelow test module is currently installed on the International Space Station. Gateway - A NASA driven, under construction, international crewed space station orbiting the Moon to be assembled by commercial launch vehicles from 2024. Russian Orbital Service Station is Russia's planned Next Generation space station, designed and intended to replace the Russian Orbital Segment of the International Space Station. Axiom Station is a planned private space station by the company Axiom Space. The initial modules are planned to be launched and docked with the international segment of the ISS before breaking off and forming a new, free-flying space station before the ISS is deorbited in the late 2020s. Starlab Space Station is an in-development, private space station being developed by the company Nanoracks in cooperation with Lockheed Martin. This free-flying space station was announced by the company on October 21, 2021, with a planned launch date of 2027. Orbital Reef Station is a planned, private space station currently in development by Blue Origin and Sierra Nevada Corporation. This modular space station is being designed for commercial and space tourism missions and uses. Preliminary plans were unveiled on October 25, 2021 with a planned launch in the late 2020s. Cancelled crewed spacecraft and space stations The X-20 Dyna-Soar was a United States Air Force spaceplane intended to be used for military missions. The program to develop the spaceplane began in 1957 and was canceled in 1963. MOL, crewed space station operated by the United States Armed Forces derived from the NASA's Gemini spacecraft. Cancelled in 1969. LK, crewed Lunar lander for the Soviet crewed lunar programs. Several LK landers were flown in space with no crew. Cancelled in 1976 with the rest of the program. CSTS, a proposed collaborative effort between the European Space Agency and Roscosmos. Originally designed as an answer to the Orion program of NASA, the project was eventually cancelled and most of the designs were incorporated into Russia's next generation crewed spacecraft: Orel (spacecraft). OPSEK was a proposed successor to Russia's involvement in the International Space Station Programme. Cancelled in 2017 by Roscosmos. Altair, (also known as the "Lunar Surface Access Module" or "LSAM" for short) was the planned