A study suggests Mars takes its red hue from a type of mineral that forms in cool water, which could reveal insights about whether Mars was ever able to support life.

It seems Mars is another such chromatic case. Until recently, scientists had theories which would explain the planet’s rust-red hue ― they thought a dry, powdery substance called hematite coated our neighbours’ surface.

New research has revealed that Martian dust's red hue comes from reactions that occurred in wet — not dry — conditions, and it could have implications for the possibility of life on the planet.

The color red and the planet Mars go together like Earth and its oceans or Saturn and its rings. However, our understanding of how the Red Planet got its signature hue might be wrong. A new hypothesis focusing on ferrihydrite is detailed in a study published February 25 in the journal Nature Communications.

Mars is widely known for its iconic rusty red color — many people even refer to it as just the "Red Planet" — but new research suggests the Martian shade isn't just lovely to look at. The chemistry behind Mars' rosy hue may actually hold important information about our cosmic neighbor.

Mars has been red for millions of years longer than previously thought, suggests new research. The study has "transformed" understanding of how the "r ed planet " developed its distinct hue, say American scientists.