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Astronauts swap ISS coolant pump unit during spacewalk
Posted: Sun, May 20, 2018, 1:39 PM ET (1739 GMT)
Two astronauts successfully completed a spacewalk Wednesday to maintain the station's cooling system. During the six-and-a-half-hour spacewalk, NASA astronauts Drew Feustel and Ricky Arnold moved a failed ammonia pump unit, nicknamed "Leaky," into storage and attached another pump, "Frosty," to the station's robotic arm. Controllers will later use the arm to move the pump to a location on the station's truss where is can be plugged in and tested. The astronauts carried out several other tasks during the spacewalk, including replacing a camera and an electronics box for a communications antenna.
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