Astronauts take 2nd spacewalk to hook up plumbing

In this image provided by NASA the Tranquility module is transferred late Thursday evening Feb. 11, 2010 from its stowage position in space shuttle Endeavour's payload bay in the grasp of the station's Canadarm2 to position it on the port side of the Unity node of the International Space Station. Tranquility was locked in place with 16 remotely-controlled bolts. Earth's horizon and the blackness of space provide the backdrop for the scene. (AP Photo/NASA)

February 13, 2010 7:40:41 PM PST
A pair of spacewalking astronauts floated back outside Saturday night to hook up plumbing on the newest room of the International Space Station and bring it alive with power.

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