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This is an accepted version of this page This is the latest accepted revision, reviewed on 21 January 2025. Inhabited space station in low Earth orbit (1998–present) "ISS" redirects here. For other uses, see ISS (disambiguation). International Space Station (ISS) Oblique underside view in November 2021 International Space Station programme emblem with flags of the original signatory states ...
A space station (or orbital station) is a spacecraft which remains in orbit and hosts humans for extended periods of time. It therefore is an artificial satellite featuring habitation facilities. The purpose of maintaining a space station varies depending on the program.
A space station (or orbital station) is a spacecraft which remains in orbit and hosts humans for extended periods of time. It therefore is an artificial satellite featuring habitation facilities . The purpose of maintaining a space station varies depending on the program.
A satellite in a direct orbit with an orbital period less than one day will tend to move from west to east along its ground track. This is called "apparent direct" motion. A satellite in a direct orbit with an orbital period greater than one day will tend to move from east to west along its ground track, in what is called "apparent retrograde ...
World's first commercial space station to reach orbit An artist's concept shows Haven-1, the first commercial space station, with a SpaceX Dragon docked and a visiting crew of four.
International Space Station mockup at Johnson Space Center in Houston, Texas. The space station is located in orbit around the Earth at an altitude of approximately 410 km (250 mi), a type of orbit usually termed low Earth orbit (the actual height varies over time by several kilometers due to atmospheric drag and reboosts).
The International Space Station is in LEO about 400 to 420 kilometres (250 to 260 mi) above the Earth's surface. [14] The station’s orbit decays by about 2 km/month (1.2 mi/month) and consequently needs re-boosting a few times a year. The Iridium telecom satellites orbit at about 780 km (480 mi).
Stability means that satellites in DRO do not need to use station keeping propellant to stay in orbit. The lunar DRO is a high lunar orbit with a radius of approximately 61,500 km. [24] This was proposed [by whom?] in 2017 as a possible orbit for the Lunar Gateway space station, outside Earth-Moon L1 and L2. [20]