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By Peter J. Smith
Department of Earth Sciences
Open University
Milton Keynes, U.K. / L
  • Geophysical and petrologic constraints on bulk lunar composition indicate both differences and similarities between the Moon and the Earth's mantle. The differences probably rule out the fission origin of the Moon, and the similarities rule out capture. Impact-fission seems the most likely.
    S. Mueller, G.J. Taylor, R.J. Phillips, "Lunar composition: A geophysical and petrological...

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