The park is an officially designated International Dark Sky Park, one of the few places in Southern California where light pollution doesn’t ruin the celestial show. On clear nights, the Milky Way ...

A massive landslide would have dammed the Colorado River, forming a deep lake that has since dried up. A meteorite impact ...

Geology is full of detective stories about the Earth's history, and a new paper in Geology by University of New Mexico ...

The Grand Canyon, one of the most iconic geological formations on Earth, may hold deeper secrets about our planet’s history ...