Public domain
Williams during Sleep-Long Experiment in the US Lab during Expedition 15
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
ISS015-E-09447 (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.
NASA Image and Video Library’s own descriptionCredit lineWilliams during Sleep-Long Experiment in the US Lab during Expedition 15. NASA/JSC, 2007-05-24. Public domain. ID: iss015e09447.
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