The signs of wave ripples in the sandy shores of ancient lake beds, created as wind pushed water back and forth have been ...

A NASA satellite has spotted frozen "kidney beans" on Mars' sand dunes trapped in place until springtime. Photographing them ...

New research reveals ancient ripples on Mars, providing compelling evidence of long-lost lakes that once existed 3.7 billion ...

Thousands of mysterious clay mounds found on Mars were formed by ancient water on the Red Planet's barren northern plains, ...

Thousands of mounds and hills in Mars' barren northern plains are full of clay minerals, providing evidence that the rocks ...

Caltech scientists published a study using NASA Curiosity rover imagery showing the past existence of warm water on Mars.

Researchers have discovered two sets of ancient wave ripples on Mars, signatures of long-dried bodies of water preserved in ...

But when the seismic data you are assessing come from Mars, and when your reasoning suggests that the best explanation for them is liquid water in the pores between rocks, you have a story.

Researchers believe dark rocks at the site of a future Mars rover landing mission may be left over from ancient volcanic eruptions, and may be protecting signs ... of ancient water on Mars since ...

Mars exploration has been guided by the search for water. The more complex quest by Mars Science Laboratory for habitable environments should illuminate the Martian environmental history ...

NASA has found signs of a lake on Mars, with evidence suggesting the presence of water rather than just ice. Researchers ...