Geologists discovered a 5,000-square-kilometer meteor impact field under the sands of the Sahara desert; the field comprises about 100 craters, which appear to have been created simultaneously about 50 million years ago. | Harper's Magazine

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Geologists discovered a 5,000-square-kilometer meteor impact field under the sands of the Sahara desert; the field comprises about 100 craters, which appear to have been created simultaneously about 50 million years ago.

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Geologists discovered a 5,000-square-kilometer meteor impact field under the sands of the Sahara desert; the field comprises about 100 craters, which appear to have been created simultaneously about 50 million years ago.

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