The two canyons, called Vallis Schrödinger and Vallis Planck, are located on the far side of the moon, so they can only be seen from orbit—not from Earth. Each canyon is over 165 miles long and ...

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 canyons are 270 and 280 kilometers long and up to 2.7 and 3.5 kilometers deep, respectively. “The landscape of the south polar region of the moon is so dramatic,” Kring says.

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 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. That’s ...

Transcript: AILSA CHANG, HOST: The Grand Canyon of Arizona formed over the course of millions of years through slow but steady erosion. Well, on the moon, there are two canyons of a similar size ...

Even though these particular lunar craters aren't visible from your backyard, Kring says there are similar, but smaller canyons on the near side of the moon that's visible in the night sky. These ...

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. That's ...