A Four-Tonne Rocket Stage Crashes At Incredible SpeedThe Moon has just copped a serious hit after a giant piece of SpaceX rocket junk came crashing into the lunar surface at an estimated 8,700km/h. The discarded Falcon 9 rocket stage weighs around four tonnes and is roughly the size of a school bus, making this one very expensive piece of space junk to leave floating around. Over time, the Moon’s gravity pulled the rocket onto a collision course with the lunar surface, with the giant piece of hardware eventually slamming into the Moon at more than seven times the speed of sound. Article continues after this ad AdvertisementResearchers are now hoping the impact could help them learn more about what lies beneath the Moon’s surface. The crash has also sparked fresh concerns about the growing amount of human-made junk being left behind in space, proving that even the Moon isn’t completely safe from our rubbish.