Expedition 20
Expedition 20 was the first International Space Station increment operated with a permanent six-person resident crew. Gennady Padalka commanded the initial crew with Michael Barratt, Koichi Wakata, Roman Romanenko, Robert Thirsk, and Frank De Winne. Tim Kopra replaced Wakata during STS-127, and Nicole Stott replaced Kopra during STS-128. The increment included Russian-segment spacewalks, major Shuttle assembly and logistics work, and the Soyuz TMA-16 handover before Padalka and Barratt returned on Soyuz TMA-14.
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Identity
- Aliases
- ISS Expedition 20Expedition TwentyInternational Space Station Expedition 20ISS EO-20
- Name
- Expedition 20
- Status
- completed
Details
- Astronauts
- Description
- Expedition 20 was the first International Space Station increment operated with a permanent six-person resident crew. Gennady Padalka commanded the initial crew with Michael Barratt, Koichi Wakata, Roman Romanenko, Robert Thirsk, and Frank De Winne. Tim Kopra replaced Wakata during STS-127, and Nicole Stott replaced Kopra during STS-128. The increment included Russian-segment spacewalks, major Shuttle assembly and logistics work, and the Soyuz TMA-16 handover before Padalka and Barratt returned on Soyuz TMA-14.
- End Date
- 2009-10-11
- Launch Site
- Outcome
- Completed. Expedition 20 established permanent six-person ISS operations, supported station assembly, research, logistics, and two resident spacewalks, and completed multiple Soyuz and Shuttle crew exchanges.
- Programs
- Start Date
- 2009-05-29
- Vehicle Families
Links
- Official Url
- https://www.nasa.gov/mission/expedition-20/
- Wikipedia Url
- https://en.wikipedia.org/wiki/Expedition_20
Assets & Meta
- Creation Time
- July 4, 2026 at 02:06:19 UTC
- Updated Time
- July 29, 2026 at 08:53:28 UTC
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