'Star Trek' Actor William Shatner Calls Astronaut in Space (Video)
On Jan. 3, 2013, Commander Chris Hadfield of the Canadian Space Agency started tweeting with William Shatner, "Captain Kirk" of the original Star trek series, and with other Star Trek cast members, plus one very famous real spaceflyer.
Hadfield's Space Adventure
After five months in space and two as commander of the International Space Station, Chris Hadfield is returning to Earth. Here's a look back at some of the many memorable moments of Hadfield's time in space.