Iron meteorite evidence for early formation and catastrophic disruption of protoplanets

In our Solar System, the planets formed by collisional growth from smaller bodies. Planetesimals collided to form Moon-to-Mars-sized protoplanets in the inner Solar System in 0.1-1 Myr, and these collided more energetically to form planets. Insights into the timing and nature of collisions during pl...

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Bibliographic Details
Published in:Nature 2007-04, Vol.446 (7138), p.888-891
Main Authors: Yang, Jijin, Goldstein, Joseph I, Scott, Edward R. D
Format: Article
Language:English
Subjects:
Accretion
Asteroids
Astronomy
Astrophysics
Cores
Cosmochemistry. Extraterrestrial geology
Earth sciences
Earth, ocean, space
Exact sciences and technology
Humanities and Social Sciences
Iron
letter
Meteorites. Tectites. Impactites
Meteors & meteorites
Moon
multidisciplinary
Nickel
Planets
Science
Science (multidisciplinary)
Solar system
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Summary:In our Solar System, the planets formed by collisional growth from smaller bodies. Planetesimals collided to form Moon-to-Mars-sized protoplanets in the inner Solar System in 0.1-1 Myr, and these collided more energetically to form planets. Insights into the timing and nature of collisions during planetary accretion can be gained from meteorite studies. In particular, iron meteorites offer the best constraints on early stages of planetary accretion because most are remnants of the oldest bodies, which accreted and melted in
ISSN:0028-0836
1476-4687
1476-4679
DOI:10.1038/nature05735