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

The strongest hints yet that Mars once hosted living microbes are no longer theoretical models or ambiguous chemistry. They are etched into a single, oddly speckled rock in an ancient riverbed, where ...

The discovery suggests that parts of Mars may once have supported tropical-like climates, complete with heavy, sustained rainfall.

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

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

NASA's plans for Mars sample return are effectively cancelled as part of a bill approved by the U.S. Congress, ending efforts to collect Perseverance rover samples that could contain evidence of alien ...

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

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.

Bright white rocks. Scattered across the rusty red plains of Mars. NASA’s Perseverance rover spotted them in Jezero crater ...