This article was originally published on December 27, 2012.
An artistic impression of International Space Station (ISS). With its first component launched in 1998, ISS is now an artificial satellite orbiting around the Earth.
The ISS acts as a space environment research laboratory housing the astronauts in space. The International Space Station is a combined project of several space agencies.
It is jointly participated by National Aeronautics and Space Administration (NASA), Russian Federal Space Agency (Roscosmos), Japan Aerospace Exploration Agency (JAXA), European Space Agency (ESA), Canadian Space Agency (CSA).