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December 6, 2011
One of the space-walking astronauts on the STS-128 mission's first session of extravehicular activity (EVA)captured this electronic still image of the Space Shuttle Discovery's cabin. Construction and maintenance continued on the International Space Station during the six-hour, 35-minute spacewalk of astronauts Nicole Stott and John "Danny" Olivas (both out of frame), mission specialist. Among their accomplishments, they removed an empty ammonia tank from the station's truss and temporarily stowed it on the station's robotic arm. Olivas and Stott also retrieved the European Technology Exposure Facility (EuTEF) and Materials International Space Station Experiment (MISSE) from the Columbus laboratory module and installed them on Discovery's payload bay for return.

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