On Saturday (Dec. 21), two NASA astronauts will venture outside the International Space Station to perform the first of potentially three urgent spacewalks to fix the vital cooling system on the orbiting outpost. You can watch it live online.
NASA Astronauts Perform 1st of 3 Holiday Spacewalks Saturday: Watch Live
SPACE.com - 21 Dec 2013 02:13
On Saturday (Dec. 21), two NASA astronauts will venture outside the International Space Station to perform the first of potentially three urgent spacewalks to fix the vital cooling system on the orbiting outpost. You can watch it live online.
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