A huge geological structure on Mars resembling a bathtub ring may be evidence of an ocean that once...
SCIENCE
April 20, 2026
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 Red Planet.
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A huge geological structure on Mars resembling a bathtub ring may be evidence of an ocean that once covered a third of the Red Planet.
Author: Space
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