Around 2 billion years ago, an asteroid the size of Mount Everest, or possibly even larger, struck Earth with catastrophic ...

Learn about two major asteroid impacts from 3.5 million years ago that may not have had lasting environmental effects.

So then, what killed the dinosaurs in such a sudden fashion? Whatever it was, it also destroyed 75 percent of all plants and ...

Predicting the precise path of a new asteroid or comet is a complex affair; the more observations you have, the better you ...