asteroid

A 900-ton equipment platform suspended hundreds of feet above the ground fell and punched a hole in the giant radio dish below, marking a catastrophic end for the iconic observatory.

A new study precisely dates the event to 2.229 billion years ago and suggests that it may have been responsible for ending an ice age.

Carbon cycle modeling and paleotemperature records argue that an asteroid impact—not volcanic fumes—was the main driver of the dinosaur die-off.

The site, Corral Bluffs in Colorado, also reveals how plants evolved and how ecosystems rebounded after the asteroid impact.

Fossils reveal the quick death of plants and animals from a massive surge of water after the impact 66 million years ago, which is thought to have spelled the demise of dinosaurs.

Nutrient-rich water helped marine organisms reinhabit Chicxulub crater relatively quickly after the mass-extinction event.

A mass extinction event from an asteroid hitting Earth wiped out forests and, concurrently, tree-dwelling birds.  

The massive rock that smashed into Earth 66 million years ago killed off many dinosaur species, but the animals were in steady decline for millennia before the cataclysm, researchers report.

As debate continues to swirl around arsenic-loving bacteria, a space rock yields new astrobiological clues.