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 ...

Projectiles flying faster than bullets from a blast 130 times bigger than the global nuclear stockpile helped form giant ...

The Grand Canyon is the biggest canyon on earth: 277 miles long, 10 miles wide, and a mile deep. It contains some of the oldest exposed rock on earth, Precambrian Vishnu schist, formed 1.7 billion ...

Scientists proposed an explanation for the formation of Vallis Schrödinger and Vallis Planck near the lunar south pole, which ...

At the Grand Canyon, summer brings heavy traffic ... Fewer people have now hiked the canyon’s length in a single trip (10) than have walked on the moon (12). Her name was Ioana Elise Hociota.

The Grand Canyon's three Inner Corridor trails had to be shut after workers discovered dangerous chlorine gas at the Roaring Springs waterfall ...

Using energy greater than the global nuclear weapons inventory, an impact event carved two grand canyons into the moon’s ...

As for smaller animals, such as squirrels, birds and reptiles, visitors should stay at least 50 feet (about one bus length) away. The Grand Canyon is a relatively safe park in terms of crime.

If you're planning a trip to Arizona's Grand Canyon, don't forget to check out this nifty little pool in its depths. But be ...