From some viewpoints, Mars is kind of like a skeleton of Earth. We can see that it had volcanoes, oceans, and rivers, but the volcanoes no longer fume and the water is all gone. A new image from the ESA’s Mars Express drives the point home. The new image is of Nirgal Vallis, one of …
Continue reading "This Dried Up Riverbed Shows that Water Once Flowed on the Surface of Mars"
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