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            Astronauts Complete Successful Spacewalk to Fix Station

   Two American astronauts have successfully repaired a crippled cooling
   system during a rare Christmas Eve spacewalk.
   It was the second spacewalk in less than a week for astronauts Rick
   Mastracchio and Mike Hopkins, and only the second Christmas Eve
   spacewalk ever performed.
   NASA ordered the spacewalks to revive a critical cooling loop at the
   International Space Station and install a new pump.
   All non-essential equipment had to be turned off when the line died on
   December 11, and many experiments were halted.
   NASA said the seven-hour spacewalk was a success, and the cooling
   system should be restored and all equipment back up and running soon.
   Two Russian cosmonauts are scheduled for a spacewalk Friday to install
   new cameras.
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   [1]http://www.voanews.com/content/astronauts-complete-successful-spacew
   alk-to-fix-station/1816992.html

References

   1. http://www.voanews.com/content/astronauts-complete-successful-spacewalk-to-fix-station/1816992.html