About 35 million years ago, an asteroid struck the ocean off the East Coast of North America, leaving behind a massive impact ...

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

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 ...

Formed over thousands of years of erosion caused by hydrothermal activity, water and other natural forces, the Grand Canyon of the Yellowstone is the primary attraction in the Canyon Village area ...

PHOENIX (AZFamily) — Major trails at the Grand Canyon re-opened Thursday afternoon after being closed for nearly 20 hours following a chlorine gas leak inside the canyon last night. The closures ...

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 ...