Scientists are confident Mars was once abundant with water, as seen in massive flood-carved channels, ancient river valleys, ...

A rock shaped like an arrowhead on Mars, displaying intriguing features, could reveal clues about ancient microbial activity.

Researchers have found new evidence for a massive subsurface ocean on Mars, highlighting the possibility of microbial life ...

There are a couple potential explanations for distinctive markings found on a Martian rock, but new evidence suggests they ...

Mars might hold enough subsurface water to cover its surface in a global ocean between 0.62 to 1.24 miles (1 to 2 kilometers) ...

An arrowhead-shaped rock on Mars sporting features that may hint at ancient microbial activity on the Red Planet has left ...

The intriguing chemistry of a rock collected by the Perseverance rover could trace to microbial activity—or not ...

The water-rich iron mineral ferrihydrite may be the main culprit behind Mars's reddish dust, rather than the dry, rust-like mineral known as hematite.

Photo released on June 11, 2021 by the China National Space Administration shows a selfie of China's first Mars rover Zhurong with the landing platform. [Photo/CNSA via Xinhua] BEIJING -- Chinese ...

NASA’s Perseverance rover found pale rocks containing kaolinite on Mars, a mineral that forms in warm, wet conditions.

Fluid-rock interactions on ancient Mars may have produced abundant magnetic minerals that preserved unusually intense records ...

NASA’s Perseverance rover found large crystals of quartz with a high purity on Mars, which probably had to have formed in the ...