Dark origins of massive 'planet killer' asteroid that wiped out the dinosaurs
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dailystar.co.ukDaily Star's biggest headlines straight to your inbox!Since the late 1970s, scientists have been increasingly sure that the asteroid that killed the dinosaurs landed near the Yucatán Peninsula in Mexico.But now they think they know where it came from, too.The object that smashed into the Earth at over 67,000 mph, forming the 93-mile-wide Chicxulub impact crater, was completely destroyed by the collision.But it left a tell-tale layer of layer of iridium-rich clay at the the boundary between the Cretaceous and Paleogene periods, 66 million years ago.Iridium, a metal that’s normally only found deep underground on Earth, is known to be common in asteroids.Research by scientists from the Southwest Research Institute in Colorado, suggests that.
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