Origin of dinosaur-ending asteroid possibly found. And it’s dark.

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A giant asteroid collided with Earth on the Yucatan Peninsula some 66 million years ago, as shown in this illustration. (Image credit: MARK GARLICK/SCIENCE PHOTO LIBRARY via Getty Images)

About 66 million years ago, an estimated 6-mile-wide (9.6 kilometers) object slammed into Earth, triggering a cataclysmic series of events that resulted in the demise of non-avian dinosaurs

Now, scientists think they know where that object came from.

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