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.

With new data coming in from Mars, scientists have a new theory about why the planet is red. What does this mean for whether ...

Together, orbiters and landers have provided scientists with data showing that Mars’ red color comes from rusted iron minerals within the dust that coats the planet. At some point, iron within ...