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Scientists found a 'bathtub ring' on Mars. Could it be evidence of an ancient Red Planet ocean?
A huge geological structure on Mars resembling a bathtub ring may be evidence of an ocean that once covered a third of the ...
The surface of Mars looks like an empty red wasteland. But if you look a bit closer, the remnants of an ancient alien civilization begin to take shape. At least, that's the conclusion of George J.
Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. The European Space Agency ...
The ground looks gently rippled and worn, with subtle colour variations giving the surface a mottled, almost velvet-like ...
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