The Japanese HTV-3 resupply craft to the ISS launched on Friday.
Videogames crossed over into the real world on Friday, as Wheatley was launched into space - or at least an engraving of the Portal 2 character was.
An anonymous tech working at NASA etched a picture of the personality core into a panel on the Japanese HTV-3 resupply craft to the ISS. As well as his robotic figure was joined by the words "In spaaaaaaace!".
A post on the official Portal 2 blog states that "NASA in no way officially endorses secretly laser-engraving characters from Portal onto their spacecraft. Believe it or not, they don't even officially endorse Portal 2, despite the fact that it's a really excellent game".