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Unplanned Spacewalk a 'Precedent-Setting' Move for Space Station Crew

NASA astronauts Chris Cassidy and Tom Marshburn don their NASA-issue Extravehicular Mobility Units for an emergency spacewalk to find an ammonia link outside the International Space Station. Canadian astronaut Chris Hadfield (center) and Russia

Hadfield's Space Station command

The Canadian astronaut took command of the International Space Station at 5 p.m. on Wednesday, March 13, becoming the first Canadian to take the helm. Hadfield has been taking some incredible photos from high above the Earth. Check out the photos below, and follow Chris Hadfield on Twitter at @Cmdr_Hadfield.