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NASA Astronauts Begin Urgent Spacewalking Repairs

Created: 12/21/2013 7:08 AM KSTP.com
By: Cassie Hart

Astronauts have stepped out on the first of a series of urgent repair spacewalks at the International Space Station.
    
The two Americans on the crew floated outside Saturday morning. They will disconnect an ammonia pump that contains a bad valve. The breakdown has crippled the space station's critical cooling system for the past 1½ weeks.
    
The pump replacement is a huge undertaking attempted only once before, in 2010. NASA has ordered up three spacewalks to complete the job. The next one will be Monday.
    
Astronauts Rick Mastracchio and Michael Hopkins will go back out again Christmas Day, if any work remains.
    
The six-man crew had to turn off all nonessential equipment inside the orbiting lab following the malfunction on Dec. 11. Scientific research came to a near-halt.

(Copyright 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)
 


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