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Occurrence of giant impacts during the growth of the terrestrial planetsThree dimensional Monte Carlo simulations of the accumulation of the terrestrial planets in the absence of gas drag produced results that are in general agreement with the number and distribution of the present planets. The accumulation process appears to be characterized by impact of bodies as large as three times the mass of Mars at velocities of about 9 kilometers per second. These giant impacts on earth may have supplied the material and angular momentum that formed the moon, should have heated earth to the melting point, and may have been responsible for the differences in the content of inert gases of the atmospheres of earth and Venus.
Document ID
19850052720
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Wetherill, G. W.
(Carnegie Institution of Washington Washington, DC, United States)
Date Acquired
August 12, 2013
Publication Date
May 17, 1985
Publication Information
Publication: Science
Volume: 228
ISSN: 0036-8075
Subject Category
Lunar And Planetary Exploration
Accession Number
85A34871
Funding Number(s)
CONTRACT_GRANT: NAGW-398
CONTRACT_GRANT: NSG-7397
Distribution Limits
Public
Copyright
Other

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