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Home » Tag Archives: American Geophysical Union

Tag Archives: American Geophysical Union

Scientists reconstruct ancient impact that dwarfs dinosaur-extinction blast

asteroid

BY NANCI BOMPEY  A new study by Norm Sleep and Don Lowe reveals the power and scale of a cataclysmic asteroid strike on the Earth that happened 3.26 billion years ago. Picture this: A massive asteroid almost as wide as Rhode Island and about three to five times larger than the rock thought to have wiped out the dinosaurs slams ... Read More »

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