We're Launching So Much Stuff At The Moon That We're Littering It With Space Junk Now Jalopnik A SpaceX rocket booster is on track to hit the moon at several times the speed of sound Scientific American Elon Musk’s SpaceX rocket set for 5,400 mph crash on moon’s Einstein crater: Report Interesting Engineering SpaceX rocket debris could slam into the moon: Here's what you need to know Space Piece of SpaceX rocket to hit Moon, says astronomy code dev theregister.com