Hadfield posted a video of the song on Sunday, his last full day in orbit after five months serving as the first Canadian to command the station.

For his part, Bowie took notice of the clip, tweeting "Hallo Spaceboy�" after Hadfield posted his note about the video; the reply refers to the title of a 1995 song by Bowie (from "Outside") that revisits Major Tom, the title character in "Space Oddity."