A canyon is a deep, narrow valley with steep sides. Here on Earth, canyons are typically formed by long-term erosion from rivers or tectonic activity. But on the moon, where there’s no ...

The extraordinary formations, each comparable in size to Earth’s Grand Canyon, are hidden on the far side of the moon — the side that always faces away from Earth — near the lunar south pole ...

Two canyons near the south pole of the moon rival the Grand Canyon, both in depth and length. Unlike the sinuous chasm in Arizona, the two lunar canyons, known as Vallis Schrödinger and Vallis ...

Yet, this rocky canyon scenery bears a rich layer of green forestation, waterways, and ample wildlife that sets the park in a class of its own among New Mexico's many natural wonders.

Two gigantic canyons on the moon — both deeper than the Grand Canyon — were carved in less than 10 minutes by floods of rocks traveling as fast as bullets, a new study finds.