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Astronauts performed spacewalk to fix space station’s cooling system.
On November 01, 2012 American astronaut Sunita Williams and Japanese astronaut Akihiko Hoshide performed a successful six-hour and 38-minute spacewalk to bypass a suspect solar array radiator. Williams and Hoshide successfully reconfigured ammonia coolant lines to bypass a presumed leak in a radiator used to cool electrical components in one of the space station's solar array modules. A spare radiator then was successfully deployed to take over cooling. This was the 166th spacewalk devoted to station assembly and maintenance since construction began in 1998.