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Astronauts replace ISS electronics during contingency spacewalk
Posted: Sat, May 27, 2017, 9:50 AM ET (1350 GMT) Astronauts successfully replaced a faulty computer outside the International Space Station during a spacewalk May 23. Jack Fischer and Peggy Whitson spent 2 hours and 46 minutes outside the station during the "contingency" spacewalk, replacing the multiplexer-demultiplexer electronics box on the station's truss that had failed Saturday. The cause of the failure isn't known, and the box showed no signs of external damage. Astronauts also installed wireless communications antennas on the Destiny module during the spacewalk, a task postponed from a spacewalk earlier this month.
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