SpaceX rocket set to crash into the moon at seven times the speed of sound — but the 5,400 mph impact is entirely expected, and might even prove useful for NASA

A defunct SpaceX upper stage is expected to crash into the Moon at 5,400 mph, seven times the speed of sound. While unplanned, the event was anticipated and may provide useful data for NASA. Two orbiters are positioned to observe the impact, which is scheduled to occur this Wednesday. The collision is considered an expected event that could offer scientific value despite the lack of intentional planning for the crash.