A menacing asteroid, some six miles wide, triggered Earth's last mass extinction. Now, scientists have found where it originated. It was "a projectile originating at the outskirts of the solar system ...
The asteroid that killed most dinosaurs 66 million years ago left behind traces of its own origin. Researchers think they know where the Chicxulub impactor came from based on levels of ruthenium. The ...
The asteroid responsible for our last mass extinction 66 million years ago — wiping out the dinosaurs — originated from the far reaches of our solar system, unlike most asteroids that have struck ...
A depiction of a large asteroid impacting Earth some 66 million years ago. Credit: Mark Garlick / Science Photo Library / Getty Images A menacing asteroid, some six miles wide, triggered Earth's last ...
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