Commander Chris Hadfield, a Canadian astronaut performed this music video of David Bowie's aboard the International Space Station, the first created in outer space.
The lyrics were somewhat altered; most notably the ending was replaced. Hadfield announced the video on his twitter account writing "With deference to the genius of David Bowie, here's Space Oddity, recorded on Station. A last glimpse of the World." David Bowie was also thanked in the ending creditsThe video led Bowie to respond, tweeting back to Hadfield "Hallo Spaceboy".
The original single by David Bowie, 1969
Background on the song here
And Commander Hadfield's return to Earth earlier today here
Cdr. hadfield's performace with Ed Robertson of Barenaked Ladies and a children's choir here