NASA to fix ISS coolant system with Christmas spacewalks

NASA to fix ISS coolant system with Christmas spacewalksLast week, one of the International Space Station's two coolant loops shut down, forcing the six astronauts on board to turn off all nonessential equipment. Two American astronauts — Rick Mastracchio and Michael Hopkins — will be leaving the confines of the ISS on Saturday, Monday, and Christmas Day, to replace a malfunctioning valve. The timing of the spacewalks means that the scheduled launch of Orbital Sciences' Cygnus mission has been delayed until January 13th at the earliest. Cygnus — a cargo ship carrying supplies to the ISS — was set for this week, the ship using its Antares rocket to blast off from Virginia before docking with the space station.

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NASA to fix ISS coolant system with Christmas spacewalks

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