Earth's Core

Earth’s Core

Earth's core is the deepest layer of our planet. It is made mostly of iron and nickel and is extremely hot. Scientists divide it into two parts: the outer core, which is liquid, and the inner core, which is solid. Even though no one can travel to the core, scientists study it using ...

The Earth’s core is a super-hot and dense sphere almost as big as the planet Mars.

The core has two parts: a solid inner core, which is like a giant metal ball, and a liquid outer core, made of molten, flowing metal.

The inner core is mostly made of dense metals like iron that sank to the planet’s center when Earth formed around 4.5 ...