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We Live In The Debris Field Of An Ancient Asteroid Collision

By wochit 24 January 2017

Enlarge Image Long, long ago when trilobites were one of the dominant forms of life on Earth and dinosaurs were yet to appear on the scene, there was a huge collision in outer space that broke up an asteroid, showering our planet with meteorites. Some scientists have suggested this ancient pummeling could have contributed to an explosion of biodiversity at the time, and new research suggests we've been getting hit by remnants of the cosmic crash ever since. A study published Monday in Nature Astronomy compares the types of meteorites found on Earth before and after the collision 466 million years ago and reveals a profound difference.