Small lakes on ancient Mars may have remained liquid for decades, even with average air temperatures well below freezing.

Visit Mars as it might have looked billions of years ago. Not frozen and dry, but wet, warm, and alive with flowing water. Across vast highlands near the Martian equator, deep river-like valleys snake ...

The north pole of Mars is slowly sinking under the weight of an ice cap that only formed within the past few million years. And, in the process, it’s telling us something about what the planet’s ...

The Mars Express orbiter has detected enough water ice buried beneath the Red Planet's equator to cover the entire planet in a shallow ocean if melted. When you purchase through links on our site, we ...

Mars was once a wet, potentially alive world, but a lot can change in a few billion years. Today it's a dusty, frigid wasteland bathed in a sea of cosmic radiation. Still, NASA plans to send humans to ...