Skylab

Skylab was a series of space stations built by the United States, but the first stations to be operated solely by the civilian agency NASA, occupied for continuously from 1971 until the early 2000s.
The second Skylab was the United States' third space station and was used as a lunar transfer station, becoming known as Lunar Skylab. 
Operations for both space stations included an orbital workshop, a solar observatory, Earth observation and hundreds of experiments. 
== List of space stations ==
* Earth Skylab. Operated continuously from 1971 until 1995, the station was deorbited in 2001.
* Lunar Skylab. Operated continuously from 1971 until 1999, the station was deorbited in 2005.
* Venus Skylab. Operated continuously from 1973 until 1979, the station was deorbited in 1985. 
* Mars Skylab. Proposed but never developed.
Category:Spacecraft
Category:Space stations
Category:Space projects