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A sinuous structure, stretching almost 1500 kilometers through the martian landscape, “is flanked by numerous tributaries
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Reull Vallis, Ancient River System Discovered On Mars (via Planetsave)
An extremely river-like structure, Reull Vallis, has been discovered on Mars and captured in these images by ESA’s Mars Express orbiter. The structure looks exactly like rivers (and their associated tributaries) look on the Earth. It seems very unlikely that the structure would have been caused by…
