| Effects
of late impacts |
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| � | H2O from comets and �wet� asteroids
mixed later? |
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| � | Lunar
origin |
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| � | Bulk
composition of moon like earth�s mantle |
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| � | Isotopic
composition also very similar |
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| � | But is missing all the volatile elements (H in H2O,
etc.) |
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| � | Dynamics
of orbit also unusual compared to other |
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| moons |
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| � | Giant Impact Origin Theory |
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| � | Higher
Mercury density also due to giant impact? |
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