The origins of plate tectonics on Earth are hotly debated, but evidence from Australia now shows that parts of the crust ...

On Wednesday, Sotheby’s will auction off a chunk of rock believed to have originated on Mars for an anticipated two to four ...

Pillars of hot rock appear to connect continental-size moving blobs at the bottom of Earth's mantle to giant volcanic eruptions at its surface.

A rare lunar meteorite found in Africa sheds new light on hidden volcanic processes that shaped the Moon long after its surface was thought to have cooled. A 2.35-billion-year-old meteorite with a ...