GRAND CANYON NATIONAL PARK, Ariz.— Tribes, conservation organizations and community groups today defended Baaj Nwaavjo I’tah ...
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 ...
New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons ...
Two Grand Canyon-size features on the far side of the moon were likely formed in about 10 minutes after an unknown object slammed into the moon 3.8 billion years ago.
The Earth’s Grand Canyon took millions of years to carve, but the moon’s grand canyons took about ten minutes.
If you've already seen the Grand Canyon, make your way to this North American canyon that's even bigger (and that actually includes six canyons in one).