The theory that water flows on Mars has received support from a new study that undermines a competing argument, suggesting life may exist just below the planet’s surface.



Most scientists agree that features of Mars, such as shorelines and canyons, suggest that it was once warm and wet.



Obervation two years ago of fresh gullies on steep slopes and near impact craters led to speculation that the planet still has flowing water in some areas. More here.

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