The streaks are called slope streaks and recurrent slope lineae (RSL), and they would suggest that there is water activity on Mars. Now it seems more plausible that they were formed by thin layers of ...

There’s long been conspiracy theories about the dark markings found the planet’s surface, with scientists having their own ...

Dark streaks on Mars that have puzzled scientists since their discovery in the 1970s are not evidence of water as many ...

On May 2, as sunlight crept over the Martian horizon, the Odyssey spacecraft captured Arsia Mons, a towering, long-extinct volcano, puncturing a glowing band of greenish haze in the planet’s upper ...

Arsia Mons, which dwarfs Earth's tallest volcanoes, and its two neighboring volcanoes are often surrounded by water ice ...

Mysterious dark streaks first observed on Mars in the 1970s are not what many believed they were. Scientists now say the ...

The Deuteronilus Cavus crater has been shaped by water, wind, ice and volcanic erosion over billions of years, showcasing ...

For decades, scientists believed that long, dark streaks on the surface of Mars were a sign of something crucial: running ...

Strange, dark streaks on Martian slopes that once hinted at flowing water are now believed to be dry dust slides, revealed ...

A set of dark streaks that regularly wind across the Martian surface are more likely to be formed by dust and wind than by ...