Has March Madness been kind to the Grand Canyon Antelopes in the last 10 years? See how the Antelopes have performed recently ...

This is your chance to potentially claim one of 450 self-guided rafting tour permits for the Grand Canyon's Colorado River.

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

New research reveals that two massive lunar canyons, deeper than the Grand Canyon, were formed in under 10 minutes by intense ...

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

Lunar debris slammed into the surface at speeds approaching "1 kilometer per second (3600 kilometers per hour or 2237 miles per hour)." ...

Arizona's magnificent Grand Canyon is painstaking result of the Colorado River's current wearing away the planet's surface ...

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

New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons on the far side ...

The Earth's Grand Canyon took millions of years to carve, but the moon's grand canyons took about ten minutes.

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

Two gargantuan canyons on the moon were carved by a hailstorm of rocks — and that’s good news for future lunar astronauts.