New evidence of ancient rivers suggests Mars may have been a "blue planet," thanks to an ocean spanning its entire northern ...

Mars has an active, electrically charged surface where dust storms and spinning dust devils regularly move and reshape the landscape. Mars is often portrayed as a dry, empty world, but the planet is ...

Three billion years ago, you could have stood on Mars and watched a river spill into a sea. That picture is still speculative ...

With its hills and distant mountains, the landscape seems somehow familiar yet at the same time eerily alien. The striking image was captured just recently by NASA’s Curiosity rover as it continues ...

Mars’s Coloe Fossae reveals a landscape shaped by ancient ice ages, with deep valleys, cratered terrain, and frozen debris flows preserved from a time when the planet’s climate dramatically shifted.

Using images from cameras on Mars orbiters, an international research team has discovered structures on Mars that are very ...

Mars is known for its barren desert landscape and dry climate. But two recent studies go beneath the surface: They explore the interior of the red planet using seismic data from NASA's InSight mission ...

It’s a virtual mission to Mars. Our first mission to Mars may still be a ways off, but people can take a virtual tour of the Red Planet thanks to a brand new video by the Mars Express Orbiter. People ...

NASA’s Mars Reconnaissance Orbiter (MRO) has made a historic leap in its mission to understand the Red Planet. With its HiRISE camera now having captured its 100,000th image, this milestone provides ...