NASA is finally releasing details on its discovery of Mars biosignatures and exactly what that means for alien life.

Mars’ Jezero Crater holds signs of ancient water and strange mineral reactions, some linked with organic compounds. With ...

A discovery made by a NASA rover has offered a clue for this mystery, new research said Wednesday, suggesting that while rivers once sporadically flowed on Mars, it was doomed to mostly be a desert ...

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 ...

NASA published tantalizing evidence that the red planet once harbored life. But Trump’s proposed budget could leave the ...

For years, scientists have been looking for signs of liquid water just beneath the surface of Mars. The problem, though, is that the observations from various orbiting probes have been maddeningly ...

Cartoonist Zach Weinersmith and his wife Kelly, a parasitologist, publish 'A City on Mars', where they mock Elon Musk's ...

Mars was a rainier, wetter place than planetary scientists previously thought, according to a new study of ancient, inverted river channels that span more than 9,000 miles (14,484 kilometers) in the ...

Satellite images of the Red Planet suggest scientists were wrong about these strange Martian features. First identified in the 1970s by NASA's Viking mission, long, dark markings snake down Martian ...

Laurie Leshin fell in love with Mars when she was 10 years old. It was 1976, the year NASA landed its twin Viking probes on the surface of the Red Planet, beaming back the first closeups of the rocky, ...