Located 3,000 miles below the Earth's surface, the inner core is anchored by gravity within the molten liquid outer core. Until now the inner core was widely thought of as a solid sphere.

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

The surface of the Earth's inner core may be changing, as shown by a new study by USC scientists that detected structural ...