Tags: Artificialsatellite, Satellite.
Soyuz TMA-21 (Gagarin) was a Soyuz flight to the International Space Station (ISS). It transported three members of the Expedition 27 crew to the ISS and docked at the station on April 6 2011. TMA-21 is the 109th flight of a Soyuz spacecraft the first of which launched in 1967.
