This layer makes up the majority of the inside of the planet. It is located underneath the crust but around the core. It ...

Is there something strange and alien confined deep inside the Earth? Is it trying to break free and escape into the heavens?

An unexpected find in tiny crystals hints that the Earth's mantle may not quite behave as has been believed for nearly a century.

Many geologists attribute the great variation in the temperature gradient to complex irregularities in the structure of the earth's crust. Some even maintain that the interior of the earth is cold ...

How does the inside of the Earth stay boiling hot for billions of years? Henry, age 11, Somerville, Massachusetts Our Earth is structured sort of like an onion – it’s one layer after another. Starting ...

Analyzing lunar tidal data from two NASA missions, scientists can discern the surprising interior of the Earth’s only natural satellite.

How does the inside of the Earth stay boiling hot for billions of years? Henry, age 11, Somerville, Massachusetts Our Earth is structured sort of like an onion – it’s one layer after another.