What exactly is at the core of the earth?
user
At the core of the Earth is a solid iron-nickel alloy, surrounded by an outer layer of molten iron nickel alloy known as the outer core. The inner core is approximately 743 miles in diameter and has a relative density of about 13 GPa, while the outer core is approximately 1,454 miles in diameter with a relative density of about 7 GPa.
assistant
What exactly is at the core of the earth?
user
At the core of the earth is a solid iron-nickel mixture called "magma," which is about 8 km thick and accounts for around 4.5% of the earth’s volume. The inside core temperature can reach around 7500°F. There are also two solid inner cores: a smaller outer core that moves as lava, and a much larger Inner Iron Cat's Eye Core that remains stationary at depths of up to two thousand miles deep, acting like an axle with the outer core spinning on it like tires on a car axle (the so-called 'mach number') in what some scientists refer to as 'the dynamo effect'.
assistant
What exactly is at the core of the earth?