Stochastic Late Accretion to Earth, the Moon, and Mars

Core formation should have stripped the terrestrial, lunar, and martian mantles of highly siderophile elements (HSEs). Instead, each world has disparate, yet elevated HSE abundances. Late accretion may offer a solution, provided that ≥0.5% Earth masses of broadly chondritic planetesimals reach Earth...

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Veröffentlicht in:	Science (American Association for the Advancement of Science) 2010-12, Vol.330 (6010), p.1527-1530
Hauptverfasser:	Bottke, William F, Walker, Richard J, Day, James M.D, Nesvorny, David, Elkins-Tanton, Linda
Format:	Artikel
Sprache:	eng
Schlagworte:	Accretion Accretion disks Astronomical objects Astronomy Earth Earth (Planet) Earth, ocean, space Earths Moon Elements Evolution, Planetary Exact sciences and technology Extraterrestrial Environment General, solar nebula, and cosmogony Mantle Mars Meteoroids Minor Planets Monte Carlo simulation Moon Planetesimals Planetology Projectiles Size distribution Solar system Stochastic models Terrestrial planets Water
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