What elements is the core of the Earth made of?

The structure of the Earth is like an onion; it has multiple layers. Earth's layers consist of the crust, mantle and core. Several elements make up the composition of Earth. read more

Earth's core is the deepest, hottest layer, and it's made up of two layers itself: the outer core which borders the mantle and the inner core, which is a ball-shaped layer made almost entirely of metal. read more

At the center of the Earth is the core, which has two parts. The solid, inner core of iron has a radius of about 760 miles (about 1,220 km). About 1.5 billion years ago, the Earth had an unfathomably hot core that was violently losing heat. read more