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00:02:22 1 History
00:02:31 1.1 Early concepts
00:04:29 1.2 Salyut, Almaz, and Skylab (1971–1986)
00:06:36 1.3 iMir/i (1986–2001)
00:07:28 1.4 ISS (1998–present)
00:09:27 1.5 Tiangong (2011–present)
00:10:57 2 Habitability
00:12:26 3 Architecture
00:13:00 4 Environmental microbiology
00:13:34 5 List of space stations
00:16:11 6 Canceled projects
00:18:37 7 Planned projects
00:21:48 8 See also



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Voice name: en-US-Wavenet-C


"I cannot teach anybody anything, I can only make them think."
- Socrates


SUMMARY
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A space station, also known as an orbital station or an orbital space station, is a spacecraft capable of supporting crewmembers, which is designed to remain in space (most commonly as an artificial satellite in low Earth orbit) for an extended period of time and for other spacecraft to dock. A space station is distinguished from other spacecraft used for human spaceflight by lack of major propulsion or landing systems. Instead, other vehicles transport people and cargo to and from the station. As of 2018, one fully functioning space station is in Earth orbit: the International Space Station (operational and permanently inhabited). Various other components of future space stations, such as Japan's space elevator and U.S. inflatable modules, are also being tested in orbit. Previous stations include the Almaz and Salyut series, Skylab, Mir, and Tiangong-1 and Tiangong-2 . China, Russia, the U.S., as well as a few private companies are all planning other stations for the coming decades.
Today's space stations are research platforms, used to study the effects of long-term space flight on the human body as well as to provide platforms for greater number and length of scientific studies than available on other space vehicles. Each crew member stays aboard the station for weeks or months, but rarely more than a year. Since the ill-fated flight of Soyuz 11 to Salyut 1, all human spaceflight duration records have been set aboard space stations. The duration record for a single spaceflight is 437.7 days, set by Valeriy Polyakov aboard Mir from 1994 to 1995. As of 2016, four cosmonauts have completed single missions of over a year, all aboard Mir. Space stations have also been used for both military and civilian purposes. The last military-use space station was Salyut 5, which was used by the Almaz program of the Soviet Union in 1976 and 1977.

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