NASA's Curiosity rover landed on Mars on Aug. 5, 2012, and has travelled more than 34 kilometres on the Martian surface. The discovery of carbonate suggests that the atmosphere contained enough carbon ...

Iran's folded rocks are a colorful formation that is part of the Greater Caucasus mountains, which formed when the Eurasian tectonic plate collided with the Arabian plate millions of years ago.

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