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Wednesday: August 3, 2011

New study suggests that Earth may have originally had two moons.New study suggests that Earth may have originally had two moons.

A tiny second moon may once have orbited Earth before catastrophically slamming into the other one, a titanic clash that could explain why the two sides of the surviving lunar satellite are so different from each other, a new study suggests. The second moon around Earth would have been about 750 miles (1,200 kilometers) wide and could have formed from the same collision between the planet and a Mars-sized object that scientists suspect helped create the moon we see in the sky today, astronomers said.

 

Posted to Weekdaily filed in Space @ 3:34 PM | Tags (9) | crashed | earth | form | lunar | moon | moons | planet | space | study |  | Discuss (0) |  | facebook | twitter | 7 Clicks | Posted by Vin


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