Space Station Crew Members Walk in Space with an Eye to the Future

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Expedition 50 Commander Shane Kimbrough of NASA and Flight Engineer Thomas Pesquet of the European Space Agency conducted a spacewalk outside the International Space Station March 24 to disconnect cables and electrical connections on Pressurized Mating Adapter-3 (PMA-3), lubricate the latching end effector on the Canadarm2 robotic arm and replace a computer relay box on the station’s truss. PMA-3 will be robotically relocated March 30 by ground controllers from the port side of the Tranquility module to the space-facing side of the Harmony module for the future installation of a second International Docking Adapter that will accommodate the arrivals of commercial crew vehicles. The spacewalk is the first of three planned in a two-week period for station crewmembers that will see PMA-3 reconnected to its new location on Harmony and an avionics box replaced that routes electricity and data to station experiments.

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