A hidden box-lattice suggests groundwater sculpted Mars long after surface water fled; Curiosity’s drills aim to confirm the tale.

Yet some regions are far enough from tectonic plate boundaries to contain rocks that have remained unchanged for billions of ...

NEW YORK — Scientists have identified what could be the oldest rocks on Earth from a rock formation in Canada. The ...

What processes during the formation of Pluto's largest moon, Charon, potentially led to it having cryovolcanism, and even an ...