Expedition 20

Expedition 20 is the twentieth long duration flight to the International Space Station. Soyuz TMA-15 launched from Baikonur Cosmodrome at 10:34 UTC on May 27, 2009.^[1] The vehicle docked with the station on May 29, 2009, officially changing the station crew from Expedition 19 to Expedition 20.^[2]

Expedition 20 was the first time that six crew members are at the station. To accomplish the six member crew, there were two separate Soyuz-TMA flights launched at two different times (each Soyuz-TMA can hold only three people): Soyuz TMA-14 launched the Expedition 19 crew on March 26, 2009, and Soyuz TMA-15 on May 27, 2009.

Gennady Padalka is the first commander of a six member station crew, and the first commander of two consecutive expeditions (Expedition 19 and 20). Nicole Stott will be the final expedition astronaut to be launched on the shuttle.

Crew

Position^[3]	First Part (May to June 2009)	Second Part (June to August 2009)	Third Part (August to October 2009)
Commander	Gennady Padalka, RSA 3rd spaceflight
Flight Engineer 1	Michael Barratt, NASA 1st spaceflight
Flight Engineer 2	Koichi Wakata, JAXA 3rd spaceflight	Timothy Kopra, NASA† 1st spaceflight	Nicole Stott, NASA‡ 1st spaceflight
Flight Engineer 3	Frank De Winne, ESA 2nd spaceflight
Flight Engineer 4	Roman Romanenko, RSA 1st spaceflight
Flight Engineer 5	Robert Thirsk, CSA 2nd spaceflight

† Participation in Expedition 20 is contingent upon the launch of STS-127.

‡ Participation in Expedition 20 is contingent upon the launch of STS-128.

Backup crew

Extra-vehicular activity

Mission	Spacewalkers	Start (UTC)	End (UTC)	Duration
Expedition 20 EVA 1 ‡	Gennady Padalka Michael R. Barratt	June 5 TBD	June 5 TBD	Scheduled: 5 hours, 30 minutes
Expedition 20 EVA 1 ‡	Planned: Prepared the Zvezda service module transfer compartment for the arrival of the Mini-Research Module 2, installed docking antenna for the module, photographed antenna for evaluation on the ground, and photographed the Strela-2 crane.^[4]

‡ denotes spacewalks performed from the Pirs docking compartment in Russian Orlan suits.

References

^ ^a ^b NASA HQ (May 24, 2009). "Expedition 20 Crew Launches from Baikonur". NASA. Retrieved June 4, 2009.
^ NASA HQ (May 29, 2009). "Expedition 20 Crew Docks with Space Station". NASA. Retrieved June 4, 2009.
^ NASA HQ (2008). "NASA Assigns Space Station Crews, Updates Expedition Numbering". NASA. Retrieved November 21 2008. {{cite web}}: Check date values in: |accessdate= (help); Unknown parameter |dateformat= ignored (help)
^ NASA (March, 2009). "Expedition 20 Press Kit" (.pdf). NASA. Retrieved June 4, 2009. {{cite web}}: Check date values in: |date= (help)

External links

NASA's Space Station Expeditions page

[launch-1] NASA HQ (May 24, 2009). "Expedition 20 Crew Launches from Baikonur". NASA. Retrieved June 4, 2009.

[dock-2] NASA HQ (May 29, 2009). "Expedition 20 Crew Docks with Space Station". NASA. Retrieved June 4, 2009.

[crew1-3] NASA HQ (2008). "NASA Assigns Space Station Crews, Updates Expedition Numbering". NASA. Retrieved November 21 2008. {{cite web}}: Check date values in: |accessdate= (help); Unknown parameter |dateformat= ignored (help)

[presskit-4] NASA (March, 2009). "Expedition 20 Press Kit" (.pdf). NASA. Retrieved June 4, 2009. {{cite web}}: Check date values in: |date= (help)

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