This is a video created by Canadian Astronaut Chris Hadfield He is actually singing the song Space Oddity by David Bowie on the International Space Station. He posted this video today as it is his last day in space after a 5 month long mission.
He is landing back on Earth tomorrow and I hope very much for his safe return. He has posted many other interesting and educational videos during this mission and he has been an inspiration worldwide. I have to say I will never think of the Canadian Space Agency the same again.