Space Station is Just like a Laboratory.It is not on the Earth, it surrounds the earth like moon or artificial satellite in Low earth orbit (means 100 to 1240 miles above the earth surface or sea level).This built by nations of the world with the Micro gravity environment very small Gravity-forces, here
gravity due to the earth, 9 m/s2.
gravity due to the sun, 6mm/s2.
gravity due to the rest milky way, 200pm/s2
Early Space stations are the Almaz and Salyut series, Skylab and most recently Mir.
Currently two space stations are in orbit; the International Space station (ISS) and the china's Tiangong 1.
Almaz launched by Soviet Union from 1965 to 1970.
Three Almaz stations were launched:Military Space Station
Almaz 101.1 or Salyut 2
Almaz 101.2 or Salyut 3
Almaz 103 0r Salyut 5
Salyut launched by Soviet Union from 1971 to 1982
Series are 1 to 7
Skylab launched by NASA, the space agency of the United States from 1973 to 1979.
Mir launched by Soviet and later Russian Space Station from 1986 to 2001
Note- If any mistake is there.Most Welcome to point out.......
Images from Google....
Next Post-World's Space Research Centers......
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