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 ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. The CaSSIS camera aboard the European Space Agency's ExoMars Trace Gas Orbiter captures dark ...

Dark features on Mars previously considered evidence for subsurface flowing of water are interpreted by new research as granular flows, where grains of sand and dust slip downhill to make dark streaks ...

Seasonal flows on warm slopes, or recurring slope lineae, have been presented as a strong evidence for currently flowing water on Mars. This assumption was supported by a correlation between activity ...

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 ...

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 ...