Roughly 37 miles east of Flagstaff, Meteor Crater—formally known as Barringer Crater—was formed approximately 50,000 years ago by a 150-foot-wide iron meteorite. As one of the best-preserved impact ...
Researchers have found evidence of a previously unknown asteroid impact, but the crater is still at large. The clues of this bygone cataclysm consist of tektites—a type of natural glass that forms ...
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