The new images by the Curiosity rover on Mars show "dramatic evidence" of ancient groundwater in crisscrossing low ridges, NASA said.

Close-up images of The Red Planet’s ridges from Mars Rover show ‘dramatic evidence’ of water - The new images taken by NASA’s ...

More than 3 billion years ago, Mars was warm, wet, and had an atmosphere that could have supported life. This artist's rendering shows what the planet may have looked like with global oceans based ...

Mars' resident robots are also constantly making new discoveries about the dusty desert world and helping to unravel some of ...

Mars' opposition occurs about every two years and coincides with the planet's retrograde motion, which began on Dec. 7 and will end Feb. 23. Retrograde occurs when a planet appears to be moving ...

To witness this astronomical anomaly, look for Mars in the eastern sky after 10 p.m., which is when the planet rises above the horizon, according to EarthSky.org.Under clear, dark skies, the ...

It's been long thought that Mars shines red due to the rusted iron minerals within the dust that covers the planet -- but a study published Tuesday in the journal Nature Communications suggests ...

Mars is a dry, rocky, cold, and dusty planet. Its dust is the key to its iconic red color. Now, scientists say there’s more to the story ( Credit: NASA/JPL/USGS ) ...

Today Mars is a cold, arid desert. But billions of years ago, it could have been a lush planet covered in surface water, not so different from Earth. The difference between then and now is the ...

Mercury, the closest planet to the Sun, is a diminutive, rocky world that orbits the Sun at an average distance of roughly 36 million miles (57.9 million kilometers).

Mars may once have held enough water to fill oceans and form coastlines. The planet’s red dust contains water and likely formed in cold conditions.

New seismic data reveals that hundreds of space rocks crash into Mars each year, which could affect how space agencies land robots and human explorers on the planet.