NASA’s rover Perseverance spent nearly a year exploring the rim of a crater believed to have held a huge lake.

“The presence of liquid water [on Mars] is a broad topic that includes rains, rivers, lakes, as well as oceans,” says Ezat ...

New evidence of ancient rivers suggests Mars may have been a "blue planet," thanks to an ocean spanning its entire northern ...

Bright white rocks found by NASA’s Perseverance rover hint at ancient Martian rain lasting millions of years, raising new questions about how wet Mars once was and what those conditions might mean.

Led by the University of Bern, the study involved investing Valles Marineris, the largest canyon system on Mars.

Ancient shoreline features hint that water on Mars once formed a vast ocean.

Evidence of free-flowing water in Mars’s past has been mounting for a long time. River deltas, water-altered minerals, and more have painted a picture of a wet world long ago. What remains a mystery ...

"The structures that we were able to identify in the images are clearly the mouth of a river into an ocean." The post ...

The recent announcement that scientists have spotted what they believe to be evidence suggesting ancient life on Mars seemed like the latest in an endless cycle of tantalizing hints followed by pleas ...

The recent announcement that scientists have spotted what they believe to be evidence suggesting ancient life on Mars seemed like the latest in an endless cycle of tantalizing hints followed by pleas ...