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Are Uranium Halos the best evidence of (a) an old earth AND (b) constant physics?

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Author Topic:   Are Uranium Halos the best evidence of (a) an old earth AND (b) constant physics?
lyx2no
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Message 80 of 142 (546574)
02-11-2010 4:08 PM 		Reply to: Message 79 by RAZD
02-11-2010 7:29 AM

Re: 209Bi is radioactive but no halos are known
Ones sets an upper limit for the age of the earth, the other sets a lower limit for the age of the earth.
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Could you expound upon the upper age limit, please. I read something about it once but now can't remember it or where. It was in the Encyclopedia Britannica, but under what I can't recall.
​
You are now a million miles away from where you were in space-time when you started reading this sentence.
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