The Population of Impactors after the Giant Impact

Details The Population of Impactors after the Giant Impact The Population of Impactors after the Giant Impact

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998lpico.957....7d&link_type=abstract

Origin of the Earth and Moon, Proceedings of the Conference held 1-3 December, 1998 in Monterey, California. LPI Contribution N

Physics

Asteroids, Cratering, Impactors, Moon, Earth-Moon System, Selenology, Orbit Determination, Lunar Craters, Simulation

Scientific paper

After the Moon-forming impact, the Earth and Moon would have been subject to impacts by asteroids, comets, and leftovers of accretion. All are plausible sources of the impactors that produced the Late Heavy Bombardment (LHB). The LHB might have included a "Lunar Cataclysm," or cratering spike, near 3.9 Ga. A mechanism for such a cataclysm involving asteroid showers following the breakup of a large main-belt asteroid has recently been proposed. However, this model, while reasonable, requires a massive main belt or unlikely breakup event.

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