2013: Year in Space (31 images)

A look back on the years's launches, space explorations and discoveries.
Updated: Oct. 21, 2013 at 2:01 PM
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NASA will commemorate the 40th anniversary of SkyLab, America's first space station, with a televised roundtable discussion featuring Skylab astronauts on Monday, May 13, 2013. NASA launched Skylab on May 14, 1973. It was the nation's first foray into significant scientific research in microgravity. In this picture Astronaut Owen Garriott participates in spacewalk to deploy twin pole solar shield during a past mission. UPI/NASA
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