The water pressure of a river can cut deep into a riverbed. Sediments from the riverbed are carried downstream, creating a deep, narrow channel. This process, known as downcutting, represents the ...

The Earth's Grand Canyon took millions of years to carve, but the moon's grand canyons took about ten minutes. The moon's grand canyons were carved in the blink of an eye The Grand Canyon in Arizona ...

About 3.8 billion years ago, two massive canyons likely formed on the moon in a span of less than 10 minutes, according to new research. The extraordinary formations, each comparable in size to ...

The origin story of Hells Canyon, North America's deepest river gorge, has long been unclear to scientists. But new research estimates it formed about 2.1 million years ago when a dramatic flood event ...

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. That's ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. About 3.8 billion ...