The centre of the Earth is younger than the surface

It sounds weird, and quite bizarre, but the core of our planet is younger than the surface. We know that planet earth is only 6,000 years old because the Bible says …. … nah, just kidding, we actually know that it is 4.54 × 109 years ± 1%. How do we know how old the earth actually … Read more The centre of the Earth is younger than the surface