Dinosaurs are the extinct relatives of birds that roamed the lands and seas of ancient Earth. They first appeared around 240 ...

New map of ‘mega ripples’ caused by dinosaur-killing asteroid helps recreate extinction event - Findings may help predict ...

The 700–1,300 feet-wide space rock deformed rocks more than six miles from the impact site when it hit 600 million years ago.

Around 600 million years ago, Earth was home to strange, soft-bodied sea creatures, but a powerful asteroid impact in what is ...

New research suggests the violent explosions of dying stars may have caused two of Earth’s biggest mass extinctions millions ...

They flattened forests, left massive craters and even killed the dinosaurs. Learn all about Earth’s hugest asteroid strikes.

One fateful day 66 million years ago, the dinosaurs — which had inhabited Earth for about 165 million years — got a nasty surprise: A roughly 9-mile-wide (15 kilometers) asteroid crashed into ...

The extinction of the dinosaurs was most probably caused by an asteroid hitting the Earth - but what would have happened if the giant space rock had missed? For a long time it was thought that ...

Since 2005, the Solfatara crater -- one of many circular ... a 10-kilometer asteroid hit Earth, triggering the extinction of the dinosaurs. New evidence suggests that the Chicxulub impact ...

The crash left a giant crater around 110 miles ... most scientists think the asteroid caused the mass extinction. Only small theropod dinosaurs survived the extinction; the ancestors of modern ...