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International Space Station Imagery
Sunita Williams enters data in a computer for the Sleep-Long experiment
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ISS015-E-09449 (24 May 2007) --- Astronaut Sunita L. Williams, Expedition 15 flight engineer, enters data in a computer for the Sleep-Wake Actigraphy and Light Exposure During Spaceflight-Long (Sleep-Long) experiment in the Destiny laboratory of the International Space Station. Sleep-Long will examine the effects of spaceflight and ambient light exposure on the sleep-wake cycles of the crewmembers during long-duration stays on the station.

Curator: Kim Dismukes | Responsible NASA Official: John Ira Petty | Updated: 06/01/2007
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