Core of the Earth | Composition, Temperature & Facts

Layers of the Earth | Overview, Diagram & Temperature

Earth's Crust | Layers, Composition & Temperature

Earth's inner core is less solid, undergoes structural changes: Study

Inner Core of the Earth | Composition, Characteristics & Facts

One of the more bizarre features of our planet is that within its molten iron core there is an enormous rotating crystal ball the size of the moon. Not weird enough for you? Consider this: that crystallized iron ball is hotter than the surface of the sun, yet it resists melting. A new study from KTH may finally settle a longstanding debate over how that's possible. | KTH Royal Institute of Technology

Earth’s Inner Core Might Be Slowing Down and Changing Shape

Earth's inner core may have stopped turning and could go into reverse, study suggests