This asteroid slammed into Earth's surface 66 million years ago, leaving a massive crater underneath the sea and wreaking havoc with the planet. No, it's not the one that doomed the dinosaurs, but a previously unknown crater created around the same time.
Sign up for CNN's Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. An asteroid from space slammed into the Earth's surface 66 million years ago, leaving a massive crater underneath the sea and wreaking havoc with the planet.
No, it's not that asteroid, the one that doomed the dinosaurs to extinction, but a previously unknown crater 248 miles off the coast of West Africa that was created right around the same time. Further study of the Nadir crater, as it's called, could shake up what we know about that cataclysmic moment in natural history.
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