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

Sediments deposited during the time when Mars had a large ocean cover structures whose high densities have been detected in ...

Studies on Mars have revealed hidden structures and dense areas beneath old ocean beds, influencing the volcanic activity of ...

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

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

Stunning new images from the ExoMars orbiter reveal ancient salt deposits on Mars, even forming a smiley face.

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

Newly released images of Mars reveal a "smiley" salt deposit on the Red Planet's surface. A related study suggests 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 ...

A new analysis of Mars' gravitational field has revealed hidden structures buried beneath the remains of an ancient ocean.

Studies of gravity variations at Mars have revealed dense, large-scale structures hidden beneath the sediment layers of a ...

Based on MAVEN's previous observations, Mars has lost enough water to space to form a GEL of between tens and hundreds of meters deep. Combined with the huge amount of water recently found buried ...