The gigantic cataclysm, which released energy 130 times more powerful than the detonation of the entire world’s atomic ...

Scientists proposed an explanation for the formation of Vallis Schrödinger and Vallis Planck near the lunar south pole, which ...

Flashy neon signs for motels, eclectic gift shops, full service stations, quirky museums and mom-and-pop restaurants, plus ...

Scientists say America is no longer the only place with a Grand Canyon as NASA spots two enormous chasms carved into the ...

The far side of the Moon has its own versions of the Grand Canyon—two of them, in fact! A new study explains how these deep ...

Sunset Crater Volcano National Monument highlights northern Arizona’s volcanic (and explosive) past, speckled with cinder cones and long-hardened lava flows People often get Sunset Crater confused ...

On the Reddit thread r/arizona, users share things about the Grand Canyon state that they find underrated, from food and ...

A colossal impact billions of years ago carved out the canyons that rival the most breathtaking features here on Earth in a ...

Two canyons that splay out from a vast asteroid crater on the moon may have been quickly formed by chains of impacts that ...

Two Grand Canyon-size features on the far side of the moon were likely formed in about 10 minutes after an unknown object ...