<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
What exactly is at the core of the earth?
<|assistant|>
The core of the Earth consists of two distinct layers: the inner core and the outer core. The outer core is a solid layer of iron and nickel, and the inner core is a liquid layer of an iron-nickel alloy. Both layers are extremely hot and dense. The inner core rotates faster than the outer core, causing a dynamo effect and a strong magnetic field to be generated. The inner core is approximately 4,000 degrees Celsius and the outer core is approximately 3,000 degrees Celsius. At this extreme temperature, the materials are melted and have the consistency of hot steel. The composition of the core is estimated to have remained virtually unchanged since the Earth formed 4.5 billion years ago.