Over the last couple of months, we've become huge fans of Chris Hadfield, the Canadian astronaut who has been in command of the International Space Station since last winter. He's taken some absolutely amazing photos of NYC from space, shown us what happens when you cry in zero gravity, and even sung a duet with one of the dudes from Barenaked Ladies. Hadfield is heading back to Earth today, but he came up with the perfect farewell video: below, watch as Hadfield covers David Bowie's seminal "Space Oddity" in outer space. He's literally floating in the most peculiar way—and the real Bowie approves!