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The Moon

What has been discovered about earth the moon and the solar system by visiting the moon?

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February 17, 2008 10:53AM

What was discovered was that the moon is composed of material that is very close to the composition of the outer layers of the earth. A theory has been adopted that the earth was struck by a small proto-planet, about the size of Mars, and the collision threw much of the earth's crust into orbit, that eventually formed the moon.