One fateful day 66 million years ago, the dinosaurs — which had inhabited Earth for about 165 million years — got a nasty surprise: A roughly 9-mile-wide (15 kilometers) asteroid crashed into what is ...
There is a very small chance that an asteroid capable of taking out an entire city could strike Earth in less than eight ...
"An asteroid this size impacts Earth on average every few thousand years and could cause severe damage to a local region," ...
YR4 has a very small chance of striking Earth when its orbit briefly intersects our planet's in December 2032.
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