Quote:
Originally Posted by ardeegee
It is absolutely directly relevant. Absolutely. The core is hot because it is radioactive. If the core was not radioactive, the core would not be hot. (Okay, you still wouldn't want to sit on it-- but not nearly as hot as it is now.) The fact that the calculations were done in an attempt to determine the age of the Earth is an irrelevant side issue-- the math still stands. If there was no radioactivity, the Earth's core would be solid and "cold" by now.
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Forget it. As I said. It's a side topic. It's actually the opposite of the topic at hand, yes it plays into it because it is the converse - if you know the age of the Earth and how hot it was and how long it would take to cool you can determine that it should have cooled already but it doesn't answer the question as stated.