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 ...

New study reveals that Earth's inner core is undergoing unexpected structural changes, challenging long-held assumptions ...

Earth's interior is made up of a series of layers that sit below the surface crust. In order of depth, these layers include the solid, but flowing mantle, the liquid outer core and the solid iron ...

6. Show students how to cut their eggs. 7. Ask students to name the different layers of the Earth's interior using the egg as a model that represents the Earth. Caution: The egg analogy has some ...

Our planet's interior is much too deep and hot to explore with probes, so scientists rely on seismic waves to understand and model its structure. Seismic waves are shock waves tha ...

Researchers found evidence that the Earth's inner core is changing shape, suggesting unseen processes affecting its movement ...

Scientists of course cannot cut into Earth and directly observe its insides. Instead, their knowledge is inferred from the ...

Research on hidden structures deep within Earth’s mantle challenges theories about our planet’s middle layer and could ...

Our planet's interior is much too deep and hot to explore ... Seismic waves are shock waves that propagate through Earth's layers after an earthquake or explosive event, traveling at different ...

Its relatively thin crust rests on an 1,800-mile-thick layer of solid rock under such heat and pressure that it slowly deforms ... The main way geologists know about the structure of Earth's interior ...