Because of the absence of liquid water on Mars’ surface today, those rusty red minerals were thought to arise from dry iron ...

We all know Mars as the "Red Planet," but how did it earn its nickname? Scientists once believed our planetary next-door ...

Red hematite is seen inside layers of quartz. Credit: matthew dodd The fact that bacterial life was gushing from deep-sea vents in Earth's earliest years suggests the same might've been happening ...

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 ...