Seismic readings of the interior of Mars strongly suggest large quantities of water buried 6 to 12 miles underground.

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) ...

Experts have been working on mapping the ocean floor with traditional methods, sending ships across the water with sonar ...

In the 1970s, images from the NASA Mariner 9 orbiter revealed ... However, the Zhurong rover findings of coastal deposits formed in an ocean may indicate that surface water was stable on Mars longer ...

Viking’s images showcased what appeared to ... deposition of sediments at the edge of an ancient ocean, it suggests a prolonged period of stable liquid water, which has major implications for Mars’ ...

Evidence suggests Mars once had an ancient ocean, with data from China's Zhurong rover revealing coastal deposits beneath the surface.

The Mars Reconnaissance Orbiter captured images of China's Zhurong ... there would need to be tides, standing water, and rivers feeding sediment into the ocean over a long period.

The radar images showed thick layers of ... The polar ice caps do not contain enough water to fill such an ocean. Subsequent missions to Mars, however, provided evidence that, while a lot of ...

Viking’s images showcased what ... at the edge of an ancient ocean, it suggests a prolonged period of stable liquid water, which has major implications for Mars’ climate history,” McNeil ...

Scientists have used orbiters and rovers to find dried streams, lakes, and gullies on Mars that hint at its watery past, but their cavalry of robots has struggled to prove the Red Planet ever had an ...

"We found evidence for wind, waves, no shortage of sand—a proper, vacation-style beach," said geologist Benjamin Cardenas.