It’s not much of a stretch to say that Earth’s inner structure, especially the innermost spherical core, has stupefied ...

Researchers have found evidence of changes in the structure of the Earth’s core. University of Southern California team, led ...

And the inner core is made of solid iron and nickel ... There are no elements in this part of the Earth's structure that can be easily extracted. The mantle is the thickest layer of the Earth ...

The Earth's inner core was once liquid ... These findings suggest that certain chemistry or structure that had previously not been considered might not require such an unreasonably large supercooling.

The Earth's interior is composed of four layers ... in diameter. Although this inner core is white hot, the pressure is so high the iron cannot melt. The iron isn't pure—scientists believe ...