The Grand Canyon in Arizona is one of Earth's natural wonders, carved out over millions of years by the gradual erosion power ...

Use precise geolocation data. Actively scan device characteristics for identification. Store and/or access information on a ...

Use precise geolocation data. Actively scan device characteristics for identification. Store and/or access information on a ...

Scientists proposed an explanation for the formation of Vallis Schrödinger and Vallis Planck near the lunar south pole, which ...

New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons ...

They were dug out by debris sent violently aloft when an asteroid or comet struck the lunar surface 3.8 billion years ago.

This discovery is promising for scientists and NASA, which plans to land astronauts at the south pole on the near side of the ...