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It's not easy to make the Moon

Jack J. Lissauer
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Jack J. Lissauer: NASA Ames Research Center

Nature, 1997, vol. 389, issue 6649, 327-328

Abstract: Theory has it that the Moon grew within a disk of material splashed out of the Earth by a body the size of Mars. According to new calculations, however, the impacting body was at least twice that size. There are probably very many terrestrial planets in our Galaxy, yet the implication of this and other simulations is that fewer of them than previously expected have Moon-sized satellites.

Date: 1997
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DOI: 10.1038/38596

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