Image: Astronaut Mike Hopkins on Dec. 24 spacewalk

Sunday, December 29, 2013 - 15:00 in Astronomy & Space

On Dec. 24, 2013, NASA astronaut Mike Hopkins, Expedition 38 Flight Engineer, participates in the second of two spacewalks, spread over a four-day period, which were designed to allow the crew to change out a degraded pump module on the exterior of the Earth-orbiting International Space Station.

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