Two such lunar canyons, Vallis Schrödinger and Vallis Planck, stretch over 270 km (168 miles) each, with depths of 2.7 km ...

The vast valleys of Vallis Schrödinger and Vallis Planck demonstrate the incredible forces that shaped the face of the Moon.

The debris landed like missiles, digging out two canyons comparable in size to Arizona’s Grand Canyon in barely 10 minutes.

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

The Grand Canyon in Arizona got carved by water over millions of years of slow but steady erosion. Two similarly-sized canyons on the moon got carved by flying rocks in about 10 minutes. About the ...

Scientists have discovered that two massive lunar canyons, deeper than the Grand Canyon, were formed in a matter of minutes ...

WASHINGTON (Reuters) - The Grand Canyon in Arizona is one of Earth's natural wonders, carved out over millions of years by ...

On Monday, a federal judge upheld National Monument protections on parts of the Grand Canyon. On Wednesday, the Navajo Nation reached an agreement with Energy Fuels, the nation's largest uranium ...

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 ...