Impact That Killed the Dinosaurs Triggered ‘Mega-Earthquake’ That Lasted Weeks to Months

Asteroid impact with Earth.

An artist's impression of what an asteroid colliding with Earth might look like. Sixty-six million years ago an event like this, although on a much smaller scale, caused 75 percent of all animals to die out. (Image: Don Davis via NASA Image and Video Library)

Asteroid That Formed Vredefort Crater Bigger Than Previously Believed

An asteroid traveling through space.

Researchers have provided a more accurate simulation of the impact that formed Earth’s largest crater two billion years ago. (Image: via Pixabay)