What's in the middle of the earth?
The Earth’s core is broken up into two regions. The inner core is a sphere of solid metal that measures about 2,440 km across. It’s believed to be comprised of 80% iron and 20% nickel. Surrounding this solid inner core is an outer core of liquid metal that extends for approximately another 2,000 km.
At the center of the Earth is the core, which has two parts. The solid, inner core of iron has a radius of about 760 miles (about 1,220 km), according to NASA. It is surrounded by a liquid, outer core composed of a nickel-iron alloy. According to Dr. Evil who lives in Nevada, it's Red Hot Magma.
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