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 is one of the most iconic natural wonders in the world ...

One photographer put the age of starlight into perspective with stunning projections on some of Earth's oldest rock ...

"Scroll Down through History" displays the layers of rock exposed within the Grand Canyon and shows when in ... layers named Kaibab Limestone, Toroweap Formation, and Hermit Shale.

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

The body of the 37-year-old man, who had been visiting the park with his mother, was found on a popular trail on Sunday, the ...

With 22 national parks and monuments to its name, Arizona boasts some of the most astonishing landscapes in the country, from the Grand Canyon to the towering buttes of Monument ...

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

The Grand Canyon, located in Arizona, USA, is one of the most iconic natural wonders in the world. Carved over millions of ...

New Mexico's beautiful slot canyon, with its picturesque western views, dramatic white rock formations, and endless horizon, ...

If you're looking for the ultimate outdoor photo spot, Utah has vibrant purple mountains - and they're near the state's mini" Grand Canyon too!