International Space Station

The International Space Station (ISS) is a habitable artificial satellite in low Earth orbit. It follows the Salyut, Almaz, Skylab and Mir stations as the ninth space station to be inhabited. The ISS is a modular structure whose first component was launched in 1998.


  • Length: 72.8m (239 ft)
  • Width: 108.5m (356 ft)
  • Height: ~20m (~66 ft)
  • Mass: 362,874 kg (800,000 lb)
  • Velocity: 28,200 kph (17,500 mph)
  • Altitude: 220 miles above earth
  • Power: 80 kW (continuous)
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