Errant SpaceX rocket stage set to smash into the moon at 5,400 mph, seven times the speed of sound — NASA a... - Yahoo

An upper stage of a SpaceX rocket, which delivered lunar landers, is expected to crash into the moon at 5,400 mph several months after its mission ended. Scientists, including NASA and South Korean researchers, are closely observing the impact to study its effects on the lunar surface, using orbiters to capture before-and-after images. This event offers a rare opportunity to observe an object impacting the moon while being monitored.