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

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 ...

You can eyeball the Grand Canyon from numerous viewpoints along the South Rim in an afternoon, but what’s the fun in that?

Plan a winter trip to the Grand Canyon with our winter guide to the Grand Canyon. Don't let a little snow keep you from ...

Grand Canyon Railway offers a year-round schedule from the historic depot in Williams, AZ, to the South Rim, plus Polar ...

No single spot provides a view of the whole canyon ... says it ends at the high-water mark on the south bank. Tourists document a flight into Grand Canyon West. In 2015 helicopter tours helped ...

Now, scientists believe that they have figured it out. Two huge canyons scored into the surface of the Moon were created in ...

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

Close to the moon's south pole are two canyons each comparable in size to the Grand Canyon that were born in a much different process. This impact unleashed about 130 times the energy of the ...