Chicxulub – Mexico

Thought to be the impact that wiped out the dinosaurs, the Chicxulub crater in the Yucatan peninsula was not easily detected because it’s buried under layers of sediment. But by mapping local gravity and magnetic field variations (seen in this image), scientists determined that an asteroid between 6 and 12 miles (10 and 20 kilometers) in diameter slammed into Earth 65 million years ago, causing near-global catastrophe.
Credit: LPI/V.L. Sharpton

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