The black lines are water on Mars surface.
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link to the gif
0.0 Maybe only wind moves sand
0.0 It's not maybe, there are water streams. I'm waiting for NASA docomantry, I've read they have close up photos of the streams and they going to show it there.
0.0 One needs much more water. They need oceans containing teeming algae. Right now, the best people can do is expand space stations but the search continues.
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