Chris Hadfield flies back to Earth today having signed off after five months as commander of the International Space Station by performing David Bowie's Space Oddity in zero gravity.
The Canadian handed over command of the ISS to Russian cosmonaut Pavel Vinogradov yesterday.
But before returning to Earth, Hadfield performed an evocative version of Bowie's 1969 hit while floating with a guitar through the ISS.
"With deference to the genius of David Bowie, here is Space Oddity, recorded on Station," he tweeted. "A last glimpse of the World."
Bowie replied with the tweet "Hallo spaceboy".