Spacewalk to Repair ISS Coolant Pump Underway

The first of three planned Christmas time Spacewalks began today at 12:01 UTC, December 21st 2013. US Astronauts Rick Mastracchio and Mike Hopkins are the spacewalkers today for the 6 and a half hour spacewalk which will see a failed coolant pump be disconnected ahead of replacement in the next Spacewalk.

Source: NASA Television

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