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Moon Formation From Collision With Earth

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Published on Oct 17, 2012

A new theory by Harvard planetary scientists states that the Moon was formed 4.5 billion years ago after a planetary body half the size of Mars crashed into the Earth at 12 miles-per-second and instantly vaporized, but cleaved off a huge chunk of Earth down to its core and dispersed it into space. It was this cloud of Earth material that formed the Moon.

Read more:
http://idealab.talkingpointsmemo.com/...
http://news.harvard.edu/gazette/story...
http://www.fas.harvard.edu/~planets/s...
http://www.sciencemag.org/content/ear...

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