But that wet period ended more than 3 billion years ago, after Mars lost its atmosphere. Planetary scientists on Earth have sent many probes and landers to the planet to find out what happened to that ...

MARS may be drenched beneath its surface, with enough water hiding in the cracks of underground rocks to form a global ocean, ...

Researchers have identified what they believe could be oceans' worth of water on Mars. There's just one snag: it's deep ...

It is understood that oceans disappeared from the surface ... They say that the water frozen in Mars' polar ice caps can't account for it all - as well as when it happened, and whether life ...

A new study suggests Mars may be drenched beneath its surface, with enough water hiding in the cracks of underground rocks to ...

New research suggests that Mars may be drenched beneath its surface with enough water, trapped in tiny cracks and pores of rock, to form a global ocean. According to the findings released Monday ...

Scientists know that millions of years ago, Mars was covered in oceans, but the planet lost its water over time and now has virtually no liquid water on its surface. Now, though, researchers have ...

The findings, published Aug. 12 in Proceedings of the National Academy of Sciences, hint at sufficient water to fill oceans and globally cover Mars to a depth of over a mile (1 to 2 kilometers).

Running those numbers, Clarke and his co-authors estimate that of the mile-deep layer of water that may once have been the ...