Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. The CaSSIS camera aboard ...

Puzzles persist about possible water at seasonally dark streaks on Martian slopes, according to a new study of thousands of such features in the Red Planet’s largest canyon system. The study published ...

Recurrent slope lineae (RSL) are dark flows that extend downhill on Mars to form sandy patterns on its surface. Researchers have previously suggested they are made of liquid debris or dry granules.

For years, researchers have been arguing about whether strange streaks on the Martian surface are caused by flowing water or sliding dust. The real answer may combine both. Recurring slope lineae ...

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Recurring slope lineae are Martian seasonal features characterized by a low brightness (albedo) during local spring/summer that fade during winter/late summer. Their daily characterization through a ...

First identified in the 1970s by NASA's Viking mission, long, dark markings snake down Martian slopes, sometimes stretching across Mars' surface for hundreds of feet. Scientists have watched some of ...

Satellite images of the Red Planet suggest scientists were wrong about these strange Martian features. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...