NASA astronaut Tom Marshburn does a flip in zero-g after arriving at the International Space Station Dec. 21. He, Russian cosmonaut Roman Romanenko, and Canadian astronaut Chris Hadfield had just docked aboard a Russian Soyuz spacecraft to join
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.