On point #7, we have only been able to dig 7.5 miles down, so to say the earth's core is 5-7k degrees is pure speculation. There is no verifiable data to back this statement.
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On point #7, we have only been able to dig 7.5 miles down, so to say the earth's core is 5-7k degrees is pure speculation. There is no verifiable data to back this statement.