Astronaut Chris Cassidy on a spacewalk on May 11, 2013. The purpose of the spacewalk was to fix a faulty cooling system on the International Space Station.
Jigsaw puzzle subject image credit: Special thanks to NASA Goddard Space Flight Center for making the photograph used for this jigsaw puzzle available through the Creative Commons Attribution license. Visit NASA Goddard Space Flight Center's Flickr photostream.
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Category: Space