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 ...

Deeply hidden in Earth's mantle there are two huge "islands" the size of a continent. New research from Utrecht University ...

If the entire earth was of uniform composition, then P and S waves would travel through the earth along essentially ... it takes for them to reach a particular location reveals important clues as to ...

Our planet's interior is much too deep and hot to explore with probes, so scientists rely on seismic waves to understand and ...

The first step toward learning about plate tectonics is to learn about the Earth's interior structure. This lesson should address both of these topics. This activity is designed for one 1-hour ...

A new research reveals hidden 'sunken worlds' in Earth's mantle, offering clues about ancient crust and tectonic mysteries.

The Earth has a layered structure made up of the core, the mantle and the crust. Different elements are present in different parts of the Earth’s structure. The crust is made from enormous ...

So, virtually everything geologists know about Earth's deep structure is from seismographs, which record how seismic waves from earthquakes travel throughout the planet. "It's as if the only way of ...

As we take our daily walks along the Earth’s surface, there are secrets hidden under our feet. Just this week, research revealed that two ancient, massive islands are buried in the planet’s mantle.