NASA’s Mars rover is on the trail of a geological mystery in the Jezero crater. While exploring an area known as Witch Hazel ...

Scientists using NASA’s Curiosity rover have discovered siderite—an iron carbonate—in the sulfate-rich rocks of Gale Crater, ...

A mineral known as siderite, discovered in rock samples collected by the National Aeronautics and Space Administration's ...

A surprise discovery in Gale Crater is the component that was missing in the puzzle of Mars's climate history.