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 ...

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

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

“If life ever appeared on Mars billions of years ago… chemical traces of this ancient life could still be present today for us to detect,” analytical chemist Caroline Freissinet of the French National ...

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

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

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.

The findings potentially solve the paradox of how liquid water seems to have persisted on Mars even when the climate grew too cold.

Scientists have traced ancient Martian shorelines inside a giant canyon, revealing where a vast ocean once stood and why ...

Are researchers searching in the wrong locations on Mars to find ancient life? This is what a recent study published in Astrobiology hopes to address as a team of researchers investigated searching in ...

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

Long before Mars turned into the frozen desert you see today, water shaped its surface in dramatic ways. Rivers cut through highlands, lakes pooled inside craters, and floods tore open canyon walls.