Mars is famous for its volcanoes, canyons and ancient river valleys, but some of its most active geology happens in slow ...

Mars may have once possessed an ocean at least as large as Earth's Arctic Ocean, a new study suggests. Previous research ...

Spacecraft orbiting the Red Planet have helped researchers map out an ancient coastline that surrounded a large ocean ...

A Mars spacecraft has now been AWOL for more than a month. But NASA hasn't given up hope of restoring contact with the MAVEN ...

NASA's plans for Mars sample return are effectively cancelled as part of a bill approved by the U.S. Congress, ending efforts ...

This doesn’t mean Mars causes ice ages on its own. Orbital cycles are only part of the picture. Earth’s oceans, atmosphere, ...

A rover recently captured sounds of lightning crackling on Mars, over a decade after scientists uncovered the first evidence ...

Mars is absolutely dripping with evidence that the red planet was once a striking blue, complete with glistening lakes, ...