The Earth's core is the innermost layer of our planet, located beneath the mantle. It is primarily composed of iron and nickel and is divided into two parts: the solid inner core and the liquid outer core. The inner core is extremely hot, with temperatures reaching up to 5,700 degrees Celsius (10,300 degrees Fahrenheit). The movement of the liquid outer core generates the Earth's magnetic field, which protects the planet from harmful solar radiation. This magnetic field is essential for life on Earth, as it helps maintain a stable atmosphere and supports various biological processes.