A new study by planetary scientists at Brown University and the University of Bern in Switzerland casts doubt on one of the most tantalizing clues that water might be flowing on present-day Mars. For ...

Add Yahoo as a preferred source to see more of our stories on Google. Dark “slope streaks,” likely resulting from dust avalanches, stretch across an area of Mars called Acheron Fossae in this image ...

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. NASA has found evidence of ...

Learn about geologic formation on Mars that resemble spiderwebs, serving as records of ancient groundwater flow on the planet ...

Images sent back by NASA’s Viking spacecraft in the 1970s revealed some unusual streaks stretching across the arid landscapes of Mars. The sighting had scientists excited about the possibility of free ...

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Did Mars' water escape underground, where it dwells today in vast amounts? Some scientists aren't so sure. When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

Researchers analyzed a global database of 500,000 strange streaks that occur on steep Martian slopes, concluding that they're most likely caused by dry processes rather than liquid flow. A new study ...