A 3- ton (2.7 metric tons) discarded rocket stage will smash into the moon Friday (March 4), but its origins are still disputed. Several astronomers who have been tracking the piece of space junk say it is from China, although Chinese officials disagree.

The discarded rocket stage will be traveling at a blistering 5,771 mph (9,288 km/h) when it hits the Hertzsprung crater on the moon’s far side at 7:25 a.m. EST (1225 GMT) Friday. The energy from the collision is expected to punch out a shallow crater and send a plume of moon dust hundreds of miles high. 


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