Discarded SpaceX rocket on a high-speed collision course with the Moon

Space tracking expert Bill Gray predicts an impact of 5,400mph — seven times the speed of sound — near Einstein Crater on the Moon’s sunlit western limb

The impact is expected near Einstein Crater on the Moon’s sunlit western limb (AP)

A drifting SpaceX rocket is on a collision course with the Moon after launching a pair of lunar landers more than a year ago.

The rocket’s upper stage will unintentionally slam into the Moon on Wednesday, carving out a crater and sending up a plume of dust and rubble that scientists — and skygazers — are eager to observe.