Scientists once believed our planetary next-door neighbor got its rusty hue from hematite, a common iron ore known for its reddish-brown color. But new research suggests that another mineral is behind Mars' most recognizable characteristic.

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.

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.