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 ...

The European Space Agency has found a “smiley” face on the surface of Mars — and the joy-sparking pattern could be a sign of ...

NASA's InSight lander may have ended its mission a year and a half ago, but data from the robot's seismograph has revealed what appears be an ocean's worth of liquid water trapped under Mars' surface.

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).

More simulations, taking into account the possibility of whole oceans of water hidden miles beneath the surface, could reveal new information about Mars’s sparse but dynamic water cycle.

Scientists suggest the salt deposits could house ancient bacteria from an era when Mars may have had an environment conducive ...

"We've now known for many decades that water existed on Mars on its surface in the forms of rivers and lakes, and oceans and salty seas. That always lends possibility to life on that planet.

lakes and possibly oceans, according to the lead scientist, Vashan Wright of UC San Diego’s Scripps Institution of Oceanography. Just because water still may be sloshing around inside Mars does ...

"Once upon a time", said Space, Mars had "lots of liquid water" on its surface, with oceans, lakes and rivers, "but the water disappeared about 3 billion years ago". This means Mars rovers have ...

Scientists believe that this salt deposit may hold clues to the possibility of ancient life on Mars. Billions of years ago, ...

“Mars once had liquid water on its surface in rivers, lakes and possibly oceans,” Manga said. “We knew that the liquid water being buried deep in the subsurface was one possible solution to ...