9 years ago
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Dartmouth Scientists Show New Evidence That Comet Killed Dinosaurs, Not Asteroid
Some 66 million years ago, a giant hurtling mass killed off almost all the dinosaurs and around 70 percent of all other species living on Earth. Most scientists think that the extinction event was an asteroid. Professors Jason Moore and Mukul Sharma of the Department of Earth Sciences at Dartmouth in New Hampshire say that a high-velocity comet killed off the dinosaurs.
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National Geographic: asteroids and comets. "The distinction between asteroids and comets is fuzzy".