NASA Doesn’t Know What Caused Space Station Ammonia Leak

January 14, 2015

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An ammonia leak forced American astronauts to evacuate the U.S. side of the International Space Station at 4 a.m. on Wednesday, and relocate to the Russian side of the station. NASA and crew members were not immediately sure if it was due to a pressure spike, a faulty sensor or a computer relay box issue, NASA…