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flag New study suggests Mars' red hue is from water-formed minerals, indicating a wetter, potentially habitable past.

flag Recent research suggests Mars' red color is due to ferrihydrite, an iron oxide that forms in cool water, indicating a wetter past capable of sustaining liquid water. flag This challenges previous beliefs that hematite, formed in dry conditions, caused the red color. flag The study, combining data from Mars missions with lab experiments, shows Mars likely had a habitable environment with water billions of years ago, earlier than previously thought.

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