Soyuz TMA -21 mission is the designation for the flight of the Russian Soyuz spacecraft to the International Space Station (ISS). In the course of the ISS program of flight is called ISS AF - 26S. It was the 26th visit of a Soyuz spacecraft to the ISS and the 132nd flight in Sojusprogramm. In honor of the 50th anniversary of the first manned space flight the spaceship was named " Yuri Gagarin ".
- Alexander Mikhailovich Samokutjajew ( first space flight), Commander, ( Russia / Roskosmos )
- Andrei Ivanovich Borisenko ( first space flight), flight engineer, ( Russia / Roskosmos )
- John Ronald Garan ( second space flight), flight engineer, (USA / NASA)
- Anton Nikolaevich Shkaplerov ( first space flight), Commander, ( Russia / Roskosmos )
- Anatoly Alexeyevich Ivanishin ( first space flight), flight engineer, ( Russia / Roskosmos )
- Daniel Christopher Burbank ( third space flight), flight engineer, (USA / NASA)
This mission brought three crew members of the ISS Expeditions 27 and 28 to the International Space Station. The Soyuz spacecraft Soyuz TMA -01M sparked off as a rescue capsule. The launch took place on 4 April 2011 at 22:18 UTC.
Originally, the return for 8 September 2011 was planned, but by the false start of a Soyuz rocket delayed the start of all other spaceships so that the flight management decided that the space station should be occupied for as long as possible with six people. However, more than one week extension was not possible because otherwise no landing in Kazakhstan would have been possible in daylight.
On September 16, 2011 at 00:38 UTC docked Soyuz TMA -21 from with Samokutjajew, Borisenko and Garan aboard. Thus began on the ISS Expedition 29 commander Michael Fossum as. The return capsule landed shortly thereafter in the steppe of Kazakhstan.