The city of Flagstaff has taken big steps to preserve the clarity of its night sky. Find out the best ways to experience the ...

From dinner at a Sedona restaurant with a stunning view to a romantic garden stroll, here's your Valentine's Day inspiration ...

The Earth's Grand Canyon took millions of years to carve, but the moon's grand canyons took about ten minutes.

A charming Arizona town in the west was designated as the world's first International Dark Sky City, meaning it offers beautiful views of the Milky Way.

The wind blew across his Montana ranch at an ideal rate of 18 miles an hour. His neighbors wanted nothing to do with turbines ...

German skydiver Max Manow pulled off an 'endless skydive,' becoming the first person to hook onto a plane midair over the Grand Canyon.

Two gigantic canyons on the moon — both deeper than the Grand Canyon — were carved in less than 10 minutes by floods of rocks ...

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

This January, lots of hotel news came across TPG's desk, including a new Holiday Inn at the Grand Canyon, reservations ...

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 ...

WASHINGTON, Feb 4 (Reuters) - The Grand Canyon in Arizona is one of Earth's natural wonders, carved out over millions of years by the gradual erosion power of the Colorado River. Close to the moon ...

New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons ...