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 ...

Billions of years ago, an asteroid or comet struck the Moon, creating two huge canyons in just minutes. This discovery has ...

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 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 ...

Discover the world's 5 deepest canyons, including the Yarlung Tsangpo in China and the Kali Gandaki in Nepal. Learn about ...

Steep-sided underwater canyons on the continental margin bordering the Pacific Ocean off the US West Coast (State of Washington). These geological features were formed by erosion processes on the ...

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 ...