Why are impact craters always round? - The answer given in an article from Scientific American.

		Saturday, 6 September, 2008
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Why are impact craters always round?

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	The answer given in an article from Scientific American. Sponsored Links:
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Title:	Science & Technology at Scientific American.com: Ask the Experts: Geology: Why are impact craters always round? Most incoming objects must strike at some angle from vertical, so why don't the majority of impact sites have elongated, teardrop shapes?
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