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US Astronauts Take A Christmas Eve Spacewalk to Fix ISS COol System
- 12/30/2013 04:39 PM EST Sci/Tech
Astronauts spent their Christmas Eve repairing a cooling system on the International Space Station. It is only the second spacewalk to take place on Christmas eve. U.S. astronauts Rick Mastracchio and Michael Hopkins are working to fix the system by installing a new pump.