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

Water once existed in abundance of at the surface of Mars. How much of that water has been stored in the planet's crust is still unclear, according to a new analysis.

In fact, it’s believed that Mars was once entirely covered with water, and since we don’t see that water today, something must have happened to it. But what? According to a new study funded by ...

Seismic readings of the interior of Mars strongly suggest large quantities of water buried 6 to 12 miles underground. Persuasive new evidence supporting the possibility of liquid water deep ...

The fate of Mars’ water—whether it was buried as ... findings include a better understanding of the Red Planet’s water cycle, its potential conditions for life, and the availability of ...

Frigid water helped paint Mars red and may have shaped a vast coastline, two new studies into the planet’s history reveal. Scientists have detected a possible ancient beach in Mars’ northern ...

Researchers are looking underfoot to uncover the mysterious past of Mars: Martian regoliths in the soil. Their water storage capabilities may help us understand the change in water on Mars over time.

At some point, iron within rocks on Mars reacted with water or water and oxygen in the air, creating iron oxide — much in the same way rust forms on Earth. Over billions of years, the iron oxide ...

But today Mars is cold and dry, with most water now located below the surface. Understanding how much water is stored offers critical information for energy exploration, as well as life ...

If true, this further supports the hypothesis that an ocean once covered a substantial portion of the northern pole of Mars. A body of water big enough to generate waves and tides also raises the ...

The new explanation for the reddish color – the rusty-colored dust known as ferrihydrite – also will help our understanding of the history of water and the possibility of life on Mars.