New Theory Suggests Dinosaur-Killing Impact Came From Edge Of Solar System
Harvard researchers say a comet from deep space — not an asteroid from the belt past Mars — was responsible for the mass extinction. Others are skeptical.
by Matthew S. Schwartz
Feb 16, 2021
1 minute
For decades, the prevailing theory about the extinction of the dinosaurs was that an asteroid from the belt between Mars and Jupiter slammed into the planet, causing cataclysmic devastation that wiped out most life on the planet.
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