Scientists believe they now know where the dinosaur-killing asteroid came from
Roughly 66 million years ago, a huge object slammed into Earth, causing a mass extinction. Now, a group of scientists believes they've figured out what it was — and where it came from.
Roughly 66 million years ago, a huge object slammed into Earth, causing a mass extinction. Now, a group of scientists believes they've figured out what it was — and where it came from.
