For decades, scientists believed that long, dark streaks on the surface of Mars were a sign of something crucial: running water. These streaks, first spotted by NASA’s Viking mission in 1976, sparked ...

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 ...

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 ...

Scientists identified an iron-rich mineral on the surface of Mars that suggests the planet’s surface may be more dynamic than we thought. Reading time 2 minutes Scientists have a fairly good idea of ...

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 ...

Elisabeth M. Hausrath receives funding from NASA, including from the MSL Curiosity rover Participating Scientist Program and the Mars 2020 Perseverance rover. Mars, one of our closest planetary ...

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, ...