Though Mars, the Red Planet, is a vast and inhospitable land today, scientists think it once resembled our very own Earth — ...

Mars Express captures images of Acheron Fossae, revealing the Red Planet’s split terrain—ancient cratered highlands and ...

Mars, the Red Planet, looks nothing like Earth today. However, its geological features indicate it once had a warm and wet ...

The European Space Agency (ESA) just released some new snapshots from its Mars Express orbiter that detail the dynamic ...

Mars may have experienced rainfall and river flow billions of years ago, reshaping the Red Planet's surface and supporting a ...

Large carbon deposits have been found on Mars, suggesting it was once home to alien lifeforms. NASA’s Curiosity Rover ...

New research suggests ancient Mars may have been warm and wet, with rainfall or snowmelt carving its iconic valleys.

Though most of the region surrounding the rock is light-colored and dusty, Skull Hill is dark, angular, and covered in tiny ...

NASA’s Curiosity rover has uncovered a missing piece in the puzzle of Mars' past atmosphere. Scientists discovered ...

Scientists say the unusually shaped rock originated from "elsewhere" or could have been a meteorite that hit Mars.

The Curiosity rover, which landed on Mars ... warmed the planet through the greenhouse effect to the point that it could sustain bodies of liquid water on its surface. There are features on ...