The impact left a 124-mile-wide crater underneath the Gulf of Mexico’s Yucatán Peninsula. And, until now, it had been assumed that the asteroid acted alone. This week, scientists at Scotland ...

Pretty much everyone knows that a giant asteroid led to the demise of dinosaurs on Earth – as well as a bunch of other ...

When an asteroid slammed into what is now the Gulf of Mexico 66 million years ago, wiping out the dinosaurs, did it have a companion? Was Earth bombarded on that terrible day by more than one ...

When this 12km-wide object slammed into what is now the Gulf of Mexico ... The outer rim (white arc) of the crater lies partly under Mexico's Yucatan Peninsula A 12km-wide object dug a hole ...