There might be a hidden ocean's worth of liquid water below the surface of Mars, seismic evidence suggests. According to a new paper published April 25 in the journal National Science Review, ...

(CNN) — Data from a retired NASA mission has revealed evidence of an underground reservoir of water deep beneath the surface of Mars, according to new research. A team of scientists estimates that ...

Learn more about the hunt for bacteria on Mars and how astronauts will need to make sure they aren't bringing any dormant ...

For years, scientists have been intrigued by mysterious dark streaks running down the slopes of Martian cliffs and craters. These marks, called slope streaks and recurring slope lineae (RSLs), have ...

Dust storms on Mars were first observed by an astronomer using a telescope in 1796, according to NASA — and yet today, the powerful storms that can engulf the entire planet are still a mystery. To ...

Advances in technology have reopened the debate over terraforming Mars, shifting it from an impossible dream to a long-term scientific and ethical question.

Networks of narrow channels lining the surface of Martian dunes, called “gullies,” have puzzled astronomers for decades. Now, as detailed in a new paper published in the journal Geophysical Research ...