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Moon: Giant Impact Hypothesis
•Explains lack of large iron core
•Explains lack of “volatile” elements
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•Explains why moon looks a lot like earth’s mantle, minus the volatiles
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•Explains large angular momentum in the earth-moon system
From our text:  Horizons by Seeds
The origin of the moon: The Movie (large files!)
http://yso.mtk.nao.ac.jp/~kokubo/moon/kit/movie.html