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

Scientists are confident Mars was once abundant with water, as seen in massive flood-carved channels, ancient river valleys, ...

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

New seismic evidence hints at liquid water deep beneath Mars’ surface, strengthening the case for the planet’s ability to ...

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) ...

More than 3 billion years ago, Mars intermittently had liquid water on its surface. After the planet lost much of its ...

The discovery extends the evidence of water beyond Mars' polar regions to areas that could be more suitable for human activities, the researchers said. "If an ocean once existed on Mars ...

Right now, Mars is a reddish desert landscape – attractive but dead, and certainly not home to any little green men. Europa and Enceladus – moons of Jupiter and Saturn, respectively – appear to have ...

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

NASA’s Perseverance rover found pale rocks containing kaolinite on Mars, a mineral that forms in warm, wet conditions.

“If these coastal deposits truly represent 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 ...

An illustration of Mars as a dry and arid world ... which is mostly made up of water in the oceans, with only a small amount in the crust. "While the approach and analysis are reasonable and ...