Astronauts to Replace More Aging Batteries in Spacewalk

Astronauts to Replace More Aging Batteries in Spacewalk
Astronaut Christopher Cassidy, STS-127 mission specialist, is pictured in the lower right corner of this July 22, 2009 image from Endeavour's third space walk of a scheduled five overall for the STS-127 mission. He is working on the station's Kibo porch. The ISS robotic arm and a cargo pallet containing new batteries rise can be seen behind him.
(Image: © NASA)

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