Astronaut Butch Wilmore works outside the International Space Station

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iss072e595522 (Jan. 30, 2025) --- NASA astronaut and Expedition 72 Flight Engineer Butch Wilmore works outside the International Space Station during a five-hour and 26-minute spacewalk. Wilmore swabbed external surfaces searching for microorganisms that may survive and reproduce near vents on the exterior of the orbital outpost.

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