Giant regions of the mantle where seismic waves slow down may have formed from subducted ocean crust, a new study finds.

For a long time, scientists thought the Earth's inner core was a solid ball of metal, sort of like a planet within a planet that sits some 3,000 miles (4,828 kilometers) below the surface.

A new study of decades worth of seismogram data shows that the surface of Earth’s iron and nickel core is more malleable than scientists thought.

Continent-sized structures of mineral protruding from the lower mantle towards Earth's outer core may be contributing to an ...

The next layer is the mantle, which makes up most of Earth's volume and is composed of dense, semi-solid rock. Then there is the outer core, made of liquid metal, and the inner core, a solid ball of ...

A groundbreaking study reveals that the Moon has a solid inner core with a density comparable to iron, reshaping our ...

America is drilling the deepest hole in history to reach the centre of the Earth. Drilling the deepest hole in history: ...

Underneath the Earth’s crust we know there is a hot mantle and an even hotter outer and inner core, but now experts say we ...

Scientists with a new theory about how Earth’s early continents formed predicted where a superold impact crater should ...

Tectonic plates move, causing strain energy to build up, and that energy eventually releases in the form of an earthquake. As ...

This inner core is surrounded by a liquid outer shell of the same composition, enclosed by the mantle—a thick layer that begins about 30 kilometers beneath the Earth's surface and extends to a ...