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

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.

The new explanation for the reddish color – the rusty ... a process that continues today. But iron oxides come in many flavors, and the exact chemistry of Martian rust has been intensely debated ...

The scientists decided that the planet’s red color more closely matches that of iron oxides containing water, called ferrihydrite. That version of rust typically forms quickly in cool water. Therefore ...

Soaked floors after hitting a puddle. These are signs the iron worm has been hard at work: rust. Otherwise fine cars are routinely sent to early graves because they become rusty cars, even though ...