Arizona's Meteor Crater remains 'the perfect natural laboratory' for studying what happens when meteors strike Earth, ...

Ages ago, before humans lived in North America, a space rock pierced the atmosphere and screamed in a blaze of light toward the surface of the Earth. Oh, the catastrophe it must have been when the ...

Did you know that Arizona is home to the world's best-preserved meteorite impact site? The Meteor Crater Natural Landmark is ...

One of the most extraordinary geological features in the continental U.S. is Meteor Crater, which lies 35 miles east of Flagstaff and 18 miles west of Winslow in Arizona’s high desert. The crater is ...

Early in the morning of October 6, 2008, astronomers at the University of Arizona detected an asteroid on a collision course with Earth. When other sightings cropped up across the world, the ...

This piece is part of a special project on deep time examining what the Western U.S. was like thousands, millions and even billions of years ago, and how that history is still visible and ...

An amateur astronomer from Quebec spotted an unusual circular depression while planning a camping and road trip through the ...