Deep inside Earth, researchers see signs that the solid inner core may be arranged in multiple chemical layers far below.

So, it's believed that the Earth's core is mainly iron and nickel. These aren't, however, the heaviest elements in the Earth's chemistry. There are plenty of heavier elements like lead, thorium, ...

Earth’s core, the deepest part of our planet, is characterized by extremely high pressure and temperature. It is composed of a liquid outer core and solid inner core. The inner core is formed and ...