March 14,2008

March 14,2008 - Craters are typically about 10 times wider...

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March 14, 2008 o Impact cratering o Most impacts happen soon after the solar system formed Period of heavy bombardment o Small craters greatly outnumber large ones o Impactors hit Earth at speeds of about Earth’s orbital speeds ~30km/s~ 70,000mph o Huge kinetic energy Produces heat Explosion/excavation
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Unformatted text preview: Craters are typically about 10 times wider than they are deep o Less craters mean younger surface Not a younger planet o Geologically dead o Mercury and the moon are considered geologically dead o Crater shapes can reveal surface conditions...
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This note was uploaded on 04/07/2008 for the course ASTR 1110 taught by Professor Hornstein during the Spring '08 term at Colorado.

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