By A Mystery Man Writer
The Earth’s major layers consist of the thin rocky crust, the mantle (very hot but solid rock), the outer core (liquid iron), and the inner
Seismic Evidence for Internal Earth Structure
Iron Atoms Discovered on the Move in Earth's Solid Inner Core - UT News
The Earth's Inner Core ANU Research School of Earth Sciences
Earth's solid inner core formed 550 million years ago
Internal Structure of the Earth
Earth's inner core is not solid
How do we know that the outer core of the Earth is liquid? - Quora
Earth - Wikipedia
Bad Astronomy, Earth's inner core may have a mushy upper layer
Earth's inner core is 'superionic', a state of matter somewhere between solid and liquid, study suggests - ABC News
Earth's inner core may have stopped spinning — study
Scientists Reveal Superionic Secrets of Earth's Inner Core
The Unsolved Mystery of the Earth Blobs - Eos