A canyon is a deep, narrow valley with steep sides. Here on Earth, canyons are typically formed by long-term erosion from ...

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

Scientists found that an asteroid impact carved two massive canyons on the moon in minutes. High-speed debris helped shape ...

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 ...

Scientists say Vallis Schrödinger and Vallis Planck—dramatic trenches near the lunar south pole—were carved in a blast that ...

CAPE CANAVERAL, Fla. (AP) - 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 lunar far side.

The gigantic Yellowstone Grand Canyon, lined with volcanic rock. With all the effects of hydrothermal activity, river erosion ...