When people say "canyon trip," most of us immediately picture the Grand Canyon. While that's certainly an iconic sight (I mean, it's literally in the name), the U.S. secretly has a ton of incredible ...

Submarine canyons are surprisingly and fundamentally different from ravines on land, researchers report. Submarine canyons are a final frontier on planet Earth. There are thousands of these ...

Scientists proposed an explanation for the formation of Vallis Schrödinger and Vallis Planck near the lunar south pole, which are each about the size of Earth’s Grand Canyon. By Kenneth Chang Kenneth ...

Soar over the extraordinary landscapes of Zhangye Binggou Danxia, China, where towering red sandstone cliffs, sculpted ...

In 2015, when NASA's New Horizons spacecraft encountered the Pluto-Charon system, scientists discovered interesting, geologically active objects instead of the inert icy orbs previously envisioned.