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Astronauts from the shuttle Endeavour completed their third spacewalk Saturday after nearly seven hours working on a joint that helps generate power for the international space station.

Heidemarie Stefanyshyn-Piper and Steve Bowen cleaned and lubricated the starboard Solar Alpha Rotary Joint, which is designed to allow the solar panels on the left side of the station to rotate and track the sun.

"We stayed at a very steady, even pace and got everything done we'd planned," John Ray, lead spacewalk officer, said at a news conference at Johnson Space Center in Texas on Saturday. Read full article »

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