'Because the ice is thin and temporary, it would leave little evidence behind, which could explain why rovers have not found clear signs of perennial ice or glaciers on Mars,' an expert said.

Mars, now a dusty world of rusted rock and thin air, once carried enough water to transform its face into something far more familiar. New mapping of ancient river systems indicates that a vast ...

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

Data has revealed evidence of an underground reservoir of water deep beneath the surface of Mars. Scientists say the water is believed to be seven miles to 12 miles down in the Martian crust. The ...

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

A study using radar data from China's now-dead Zhurong rover finds strong evidence that Mars had a stable ocean in the ancient past. Scientists have used orbiters and rovers to find dried streams, ...

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

Three billion years ago, you could have stood on Mars and watched a river spill into a sea. That picture is still speculative ...

(CNN) — Data from a retired NASA mission has revealed evidence of an underground reservoir of water deep beneath the surface of Mars, according to new research. A team of scientists estimates that ...

Mars may be drenched beneath its surface, with enough water hiding in the cracks of underground rocks to form a global ocean, new research suggests. The findings released Monday are based on seismic ...

(CNN) — Data from a retired NASA mission has revealed evidence of an underground reservoir of water deep beneath the surface of Mars, according to new research. A team of scientists estimates that ...