Quote:
Originally Posted by kennyc
My point is that this is not about the age of the Earth, it's about why the core is hot so as I said, somewhat relevant, but not directly.
|
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.