Space.com on MSN
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 ...
Scientists believe they found fresh proof of an ancient ocean on Mars in the form of a “bathtub ring” it left after it dried ...
Starlust on MSN
Scientists identify a 'bathtub ring' on Mars, hinting at a long-lost ocean on the Red Planet
The ancient ocean on Mars probably occupied a third of its surface.
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