Animation of the ISS re-boost performed by Jules Verne ATV. The Station's altitude naturally decreases with atmospheric drag. Regular re-boosts push the Station back into a higher altitude. Re-boosts can be provided by the Russian Progress, the Space Shuttle, the ISS itself and the ATV.
Backdropped by the darkness of space, the International Space Station is seen from Space Shuttle Discovery as the two spacecraft begin their relative separation. Earlier the STS-124 and Expedition 17 crews concluded almost nine days of cooperative work on board the Shuttle and Station. (11 June 2008)