Published on May 11, 2013
Outside the International Space Station, Expedition 35 Flight Engineers Chris Cassidy and Tom Marshburn of NASA conducted a 5-hour, 30-minute spacewalk on the station’s P6 truss to replace a suspect pump controller box which distributes coolant to the station’s thermal control system. The quick-turnaround spacewalk was mounted just 48 hours after an ammonia coolant leak developed on P6. After installing the spare pump, power was turned on, and the system appeared to be working properly with no indications of ammonia leaking from the pump. Also, Humans 2 Mars, 40th Anniversary of Skylab, Marshburn “Testifies” From Space, Next ISS Crew Focused on Launch, Curiosity Rover Update, Landsat’s Vegas Time-Lapse, Fruit Flies Improving Flight, Student Launch Projects and more!