Massive collision created moon 4.5 billion years ago

June 5, 2014 7:53 PM

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Massive collision created moon 4.5 billion years ago

CAPE CANAVERAL, Florida (AP) — A new study strengthens the notion that our moon was created by a collision between Earth and a planet-sized object some 4.5 billion years ago.

German scientists studied moon rocks gathered by astronauts nearly a half-century ago in the Apollo 11, 12 and 16 missions. They analyzed various kinds of oxygen atoms and found the moon rocks have a different makeup than Earth rocks do. That fits with the idea that the moon would contain material f...

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