Thad Roberts was the first person to have sex on the moon. Kind of.

Yeah, yeah, we know … how can you “kind of” have sex on the moon? Wouldn’t NASA have known about this? Plus, it’s tough enough to get any leverage on satin sheets, never mind with no gravity. How did this guy manage it?

Well, now that “Sex on the Moon: The Amazing Story Behind the Most Audacious Heist in History,” is out in bookstores and author Ben Mezrich was interviewed on CTV, we can all get the skinny on the otherworldly sex. It seems that young Thad Roberts, 25, a NASA co-op student who was on course to become an astronaut, fell in love. In order to impress the young lady—who he had known only for three weeks and who was in on the plot—Roberts pulled off what would be a stunning heist, going through what the author calls an “Oceans 11” -type operation to steal a 600-pound safe full of moon rocks that the FBI valued at $21 million dollars, CTV says.

To celebrate their getaway, the couple put the rocks under the hotel mattress and became—kinda—the first couple to have sex on the moon. She broke up with him while he was in prison.

So the moon has been informally christened.

You may now make whatever joke you like about the first person to have sex on Uranus.