A vast impact crater near the moon’s south pole was formed by an asteroid moving at more than a kilometre a second, releasing energy when it struck equivalent to 130 times that of all the nuclear ...

In Grand Canyon National Park, Toroweap Overlook is the best vantage point on the North Rim to catch a sunrise and the Colorado River about 3,000 feet below. This part of the park has been closed ...

Grand Canyon National Park is temporarily closing its in-park hotels and lodges. The closure is caused by a series of breaks in the Transcanyon Waterline, which supplies water to the park. Guests with ...