Earthquakes, volcanic eruptions, shifting tectonic plates—these are all signs that our planet is alive. But what is revealed ...

Peeling back each of Earth's layers reveals a lot about our ... Seismic waves travel faster through dense material like solid rocks and slow down in liquids. Relative differences in arrival ...

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 ...

Earth’s core is located below the middle layer called the mantle and the outer layer–or crust. It consists of two main parts–a liquid outer core and a more solid inner core. The outer layer ...

That solid iron inner core of Earth may still hold liquid iron, according to a new study from the University of Utah. Scientists have used seismic waves to research Earth’s inner core ...

Back in my day, there were only four layers of Earth: the crust, mantle, liquid outer core and solid inner core. Now, scientists have revealed a new, distinct layer within our planet’s inner ...

Beneath the outermost crust, the mantle and the molten-liquid outer core lies the Earth’s solid metal center — which actually has a hidden layer, or an “innermost inner core” within ...

This layer, known as the D" layer, is about 1,900 miles underneath the Earth's surface, resting between the liquid outer core and the solid mantle, and varies massively in thickness across the globe.

Finally, there’s the core. The liquid outer layer of the core is responsible for producing Earth’s magnetic field, which is further stabilized by the solid inner section. [Related: The Earth ...