You've probably followed the Mars rover missions on and off for years, watching those red-dust landscapes scroll across your TV screen and wondering: Could something have lived there once? Now, after ...

Tardigrades have a reputation for being nearly indestructible. These microscopic animals, often nicknamed water bears, can dry out and slip into a dormant state.

For more than a decade, NASA’s Curiosity rover has been climbing a Martian mountain, reading the planet’s ancient history layer by layer. Now, a discovery of web-like rock formations and tiny ...

Why it matters: While not evidence of life, these discoveries show that ancient Mars had complex organic chemistry, ...

New research shows that an intense regional dust storm transported unusually high amounts of water vapor into Mars’ upper atmosphere, boosting hydrogen escape. The discovery reshapes understanding of ...

Spiderweb-shaped rock patterns on Mars may rewrite the timeline of when water disappeared from the Red Planet.

NASA's Curiosity rover just found bizarre nodules on giant Martian "spiderwebs." Scientists are puzzled.

NASA’s Curiosity rover has spent six months exploring the site to investigate if they are a clue to the presence of water.

TUSCON, Ariz. — Researchers working on the Phoenix Mars Mission say they've found evidence that liquid water exists on the red planet, though some mission scientists remain skeptical of the conclusion ...