Canadian Commander Chris Hadfield becomes a web sensation when he said goodbye to life on the International Space Station by making a cover version of David Bowie's 'Space Oddity.'

IN SPACE (YOUTUBE.COM/CHRIS HADFIELD/CSA/NASA) -  An astronaut has said goodbye to life on the International Space Station by making a cover version of David Bowie's Space Oddity.

But the music video could prove to be his most popular contribution yet.

The Canadian, who will fly home today as his five-month mission comes to an end, is shown playing an acoustic guitar and singing Bowie's classic Space Oddity.

The astronaut wrote on Twitter: "With deference to the genius of David Bowie, here's Space Oddity, recorded on Station. A last glimpse of the World."

Bowie replied: "Hallo Spaceboy."

Before going into orbit, Hadfield said playing music was important in taking care of the "psychological side" of living in space.