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13 years ago
What evidence is there that Earth has been struck by large meteorites? 
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13 years ago
There are numerous craters still visible today, such as the Barringer Crater in Arizona  and the Manicouagan reservoir in Canada.  Both clearly display the traits of a large impact,  including a central peak in the case of the Canadian crater.  There is also evidence of a large impact in the Yucatan that may have caused the extinction of the dinosaurs. 
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