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

The Earth's interior is composed of four layers, three solid and one liquid—not magma but molten metal, nearly as hot as the surface of the sun. The deepest layer is a solid iron ball ...

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.

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

There's a lot more to Earth than meets the eye. Far from being just a roundish rock barreling through space, our planet is composed of several layers held together by intense forces of gravity.

Keep reading to learn more about Earth's different layers, its atmosphere, and what makes the "blue planet" unique. Earth is made out of different layers, and those layers get hotter and more ...

The Earth is made up of different layers: Therefore ... The movement of the plates and the activity inside the Earth, is called the theory of plate tectonics.

have discovered that this core hides two distinct layers The surprising discovery about the Earth's core: "We may have to rewrite the textbooks" In 2021, the year of the discovery, Stephenson ...