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The Engineer
Engineering Fields - Engineering Physics - Physics... United States - Member - NY Popular Science - Genetics - Organic Chemistry... Popular Science - Cosmology - New Member Ingeniería en Español - Nuevo Miembro - New Member

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Meteor May Have Caused Early Mass Extinction

06/05/2006 11:39 AM

Scientists have found an impact crater more than a mile under the East Antarctic Ice Sheet. The meteor that created the 300 mile wide crater 250 million years ago may have caused the Permian-Triassic mass extinction and perhaps set into motion the breakup of the supercontinent Gondwanda.

http://www.spaceflightnow.com/news/n0606/04ancient impact/
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Jorrie
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Engineering Fields - Aerospace Engineering - Retired South Africa - Member - The Rainbow-nation Engineering Fields - Engineering Physics - Relativity & Cosmology Popular Science - Cosmology - The Big Picture!

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#1

Earth peppered by meteors

06/05/2006 10:52 PM

Taking a cue from our Moon's many big craters, Earth must also have been hit by many giant boulders in the distant past. Fortunately, every one that has hit is one less to worry about for the future! But there are hundreds of thousands left out there...

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 "Perplexity is the beginning of knowledge." -- Kahlil Gibran
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