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This website by Gregg Herres and William K.Hartmann outlines the leading hypothesis of the origin of the moon as caused by a massive impact of a comet with the early earth. It reviews the alternative hypothesises and explains their weaknesses. References to the scientific literature are provided.
<a href="https://www.compadre.org/astronomy/items/detail.cfm?ID=497">Planetary Science Institute. The Origin of the Moon. Tucson: Planetary Science Institute.</a>
Planetary Science Institute. The Origin of the Moon. Tucson: Planetary Science Institute. https://www.psi.edu/epo/moon/moon.html (accessed 20 March 2025).
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