This is a sweded parody of “Space Oddity,” the David Bowie song (and music video). The lyrics contain only the thousand most common words in English. It’s a loving tribute to David Bowie and it’s inspired by Flight of the Conchords, Michel Gondry, and especially the Up-Goer Five diagram by Randall Munroe.
On a related note, Randall Munroe’s next book will be Thing Explainer, an extension of his Up Goer Five strip a few years ago. It will probably be worth your money if What If? is anything to go by.
(via Waxy)