Scientists have uncovered compelling evidence suggesting Mars once hosted an ancient ocean. Data from China’s Zhurong rover ... Since NASA’s Mariner 9 orbiter captured images of water-sculpted ...

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) ...

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

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

Until now, only about a quarter of the seafloor has been mapped using ships with special sonar equipment. The rest has ...

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

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 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’ ...

In the 1970s, images from the NASA Mariner ... findings of coastal deposits formed in an ocean may indicate that surface water was stable on Mars longer than previously recognized.