A layer of charged particles, called the ionosphere, surrounds Earth, extending from about 50 to 400 miles above the surface of the planet. Disclaimer: AAAS and EurekAlert! are not responsible for ...

The boundary between the two lies about 465 miles (750 kilometers) beneath the Earth's surface. The crust is the outermost layer of the Earth. It is the familiar landscape on which we live ...

In this diagram, the red lines represent ... The mantle is a semi-solid layer below the crust. There are no elements in this part of the Earth's structure that can be easily extracted.

Earth is made out of different layers, and those layers get hotter and more pressurized the deeper you go. The first layer is the crust, a thin outer shell that extends about 18 miles (30 km ...

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