Mars may be tens of millions of kilometers away, but for planetary scientists, the most revealing rehearsal space sits in the ...

Mars changed from a blue world with water to a red desert because its atmosphere escaped into space over billions of years.

There might be a hidden ocean's worth of liquid water below the surface of Mars, seismic evidence suggests. According to a new paper published April 25 in the journal National Science Review, ...

The European Space Agency has released new images of a rare "butterfly" crater on the Red Planet. The bug-like structure ...

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 ...

Despite its dry, dusty surface and thinner atmosphere, Mars may have more in common with Earth than scientists previously thought. In a new study, researchers at the University of Rochester—including ...

Liquid water once shaped the Martian landscape dramatically, carving valleys, filling lakes, and forming vast oceans. Billions of years ago, during Mars' early days known as the Noachian and Hesperian ...

NASA has quietly taken a major step toward crewed missions to Mars by selecting four people to live and work in a sealed, 3D-printed habitat for 378 days. The mission is designed to mimic the ...

NASA's Perseverance rover has just captured proof of lightning in Mars, which appears to spawn in the whirlwinds that roam its surface.

Mars is home to perhaps the greatest mystery of the Solar System: the so-called Martian dichotomy, which has baffled scientists since it was discovered in the 1970s. The southern highlands of Mars ...

Until recently, Mars was studied only through telescopes and some data that was recorded from early spacecraft. It was thought that Mars' polar regions were the only significant reservoirs of ice, ...