| Mission type | ISS Expedition | ||||
|---|---|---|---|---|---|
| Expedition | |||||
| Space Station | International Space Station | ||||
| Began | 16 March 2011, 08:54 UTC | ||||
| Ended | 23 May 2011, 21:35 UTC | ||||
| Arrived aboard |
Soyuz TMA-20 Soyuz TMA-21 |
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| Departed aboard |
Soyuz TMA-20 Soyuz TMA-21 |
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| Crew | |||||
| Crew size | 6 | ||||
| Members |
Expedition 26/27: Dmitri Kondratyev Catherine Coleman Paolo Nespoli Expedition 27/28: Andrei Borisenko Aleksandr Samokutyayev Ron Garan |
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(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.
After an extended two-month stay, Kounotori 2 was detached from the nadir docking port of the Harmony module by the Canadarm 2 robotic arm at 15:29 UTC on 28 March 2011, and released at 15:46 UTC. Launched in January 2011 to resupply the ISS, Kounotori 2 (also known as HTV-2) was the second Japanese H-II Transfer Vehicle. It reentered Earth's atmosphere at around 03:09 UTC on 30 March.