What are some of the largest extraterrestrial impacts to effect Earth? Learn what we've seen in history, and what is ...

The impactor formed Vredefort crater, what is today the biggest crater on our planet. Using updated simulation data, University of Rochester researchers discovered the impactor that formed ...

The confirmed ones range from the 200-mile-wide Vredefort crater in South Africa to a piddly little car-size dent in a field near Haviland, Kansas. We only know about that one because it happened ...