 Promotional Poster | |
| Mission type | Long-duration expedition |
|---|---|
| Expedition | |
| Space station | International Space Station |
| Began | 16 March 2011, 04:27 UTC |
| Ended | 23 May 2011, 21:35 UTC |
| Arrived aboard | Soyuz TMA-20 Soyuz TMA-21 |
| Departed aboard | Soyuz TMA-20 Soyuz TMA-21 |
| Crew | |
| Crew size | 6 |
| Members | Expedition 26/27: Dmitri Kondratyev Catherine Coleman Paolo Nespoli Expedition 27/28: Andrei Borisenko Aleksandr Samokutyayev Ron Garan |
 Expedition 27 mission patch  (l-r) Garan, Nespoli, Samokutyayev, Coleman, Borisenko and Kondratyev | |
Expedition 27 was the 27th long-duration expedition to the International Space Station (ISS), starting on 16 March 2011. Expedition 27 saw numerous notable events, including the undocking of the Progress M-09M and Kounotori 2 spacecraft, the arrival of the Soyuz TMA-21 and Progress M-10M spacecraft, and the final rendezvous with the ISS of NASA's Space Shuttle Endeavour, on its last mission, STS-134. The expedition ended on 23 May 2011 with the departure of the Soyuz TMA-20 spacecraft, although command of the station was ceremonially handed over to the crew of Expedition 28 on 22 May.