The origin of the moon

Details The origin of the moon The origin of the moon

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987amsci..75..469t&link_type=abstract

American Scientist (ISSN 0003-0996), vol. 75, Sept.-Oct. 1987, p. 469-477.

Computer Science

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Earth-Moon System, Lunar Composition, Lunar Evolution, Meteorite Craters, Angular Momentum, Planetary Composition, Solar Corona

Scientific paper

The major models for the origin of the moon can be grouped into five separate categories: capture from an independent orbit, fission from a rapidly rotating earth, formation with the earth as a double planet, disintegration and accretion of incoming planetesimals, and earth impact of a Mars-sized planetesimal. Attention is presently given to the last of these alternatives. A unique feature of this scenario is that most of the material on the moon comes from the silicate mantle of the impactor, which is then its geochemical composition's primary determinant. The impactor may have already differentiated into a metallic core and a silicate mantle before the impact.

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