Everyone knows of the asteroid that spelled the end of all non-avian dinosaurs—the Chicxulub impactor—but a new study shows ...

For many, the matter is settled – and there’s a huge crater down in Mexico to act as evidence. However, a minority of experts ...

Volcanic activity in India altered the climate but didn't kill the dinosaurs; the Chicxulub meteorite did, by triggering an ...

Ruthenium is common in asteroids but rare on Earth, enabling scientists to confirm that the element in the samples came exclusively from the impactor at Chicxulub. The study’s lead author ...

The scientists therefore conclude that the meteorite impact was the ultimate cause of the dinosaur extinction event. What killed off the dinosaurs—was it the Chicxulub meteorite or did the effects of ...

Related: Earth vulnerable to major asteroid strike, White House science chief says The larger of the two asteroids, which was still smaller than the Chicxulub impactor that wiped most dinosaurs ...

This pales in comparison to the size of the 6- to 9-mile-wide (10 to 15 kilometers) Chicxulub impactor that wiped out the dinosaurs, but they would still pack a significant punch. Their small size ...

But climate researchers at Utrecht University have now ruled out this scenario, finding that while the roughly contemporaneous volcanoes had a measurable impact on the climate, those impacts were ...