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

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

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

Spacecraft orbiting the Red Planet have helped researchers map out an ancient coastline that surrounded a large ocean billions of years ago ...

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

Mars, once a world with rivers, lakes, and oceans, tells a tragic story written in rock and ice. The loss of its magnetic field exposed it to relentless solar radiation, stripping away its atmosphere ...

'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 today is a frozen, dusty desert. But if you look deep inside Valles Marineris, the largest canyon system on Mars and in ...

Mars is absolutely dripping with evidence that the red planet was once a striking blue, complete with glistening lakes, ...

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

New University of Arkansas research adds weight to the suggestion of a long-lived ocean covering Mars’s northern hemisphere.

Scientists have discovered evidence of a massive ancient ocean on Mars, providing new insights into the planet's history when it was abundant with water.