One photographer put the age of starlight into perspective with stunning projections on some of Earth's oldest rock ...

Two gigantic canyons on the moon — both deeper than the Grand Canyon — were carved in less than 10 minutes by floods of rocks ...

Even though humans have pondered the moon since the first of us looked skyward, there is still much we don't know about it.

Under the Sierra Nevada in California, scientists have observed a rare phenomenon that sheds light on the dynamics of the ...

Yellowstone National Park is a popular destination for geology field trips. It’s easy to see why—the dynamic landscape ...