The far side of the Moon has its own versions of the Grand Canyon—two of them, in fact! A new study explains how these deep ...

The Grand Canyon in Arizona got carved by water over millions of years of slow but steady erosion. Two similarly-sized canyons on the moon got carved by flying rocks in about 10 minutes.

For comparison, the Grand Canyon in Arizona is 446 km long and up to 1.9 km deep. But while that was carved by water over millions of years, the lunar canyons are clear, straight grooves formed by ...

The Grand Canyon in Arizona got carved by water over millions of years of slow but steady erosion. Two similarly-sized canyons on the moon got carved by flying rocks in about ten minutes.

For comparison, it took 5 million to 6 million years for water to erode the landscape of Arizona to create the Grand Canyon. The celestial object that plowed into the moon likely hit with a speed ...