Samples drilled by the Curiosity rover on Mars have revealed abundant signs of a carbon cycle that remained hidden from ...

A mineral called siderite found abundantly in rock drilled by a NASA rover on the surface of Mars is providing fresh evidence ...

The Curiosity rover identified hidden caches of the mineral siderite, which could help explain why Mars lost its habitable climate.

Learn more about the Curiosity's carbonate discovery on Mars, and what it tells of about Mars' past and Earth's future.

Findings appear to address a key mystery about Mars’s ancient past: How and when was the planet’s atmosphere thick enough to ...

A scientific analysis of samples collected on the surface of Mars shows the red planet has evolved its own version of a carbon cycle. The cycle helps create life on Earth, but why not on Mars?

In those drill sites, Curiosity detected deposits containing an iron carbonate material called siderite. According to Ben ...

The siderite identified in Curiosity data helps confirm and refine models of Mars's early warm period, more than 3.5 billion ...

A new study led by a University of Calgary scientist has found evidence that suggests Mars once had a carbon cycle, giving further support for the habitability of the red planet.

A new hypothesis from SETI Institute scientist Dr. Janice Bishop and Dr. Melissa Lane from Fibernetics in Pennsylvania could ...