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Re: Olbers

Mark,
The 3K background radiation comes from a time when the universe
cooled enough to become transparent about 3000K if it hadn't been expanding
the sky would be giving off 3000K black body radiation. Of course this
presupposes that the universe was created in the big bang.
This is not the classic explanation, but it is consistent with
modern cosmology.

Gary

At 07:31 AM 2/13/2004 +0100, you wrote:
Both the finite age of the universe and the fact that it's expanding
contribute to explaining Olbers' Paradox, and I'm told that the former is
the main contribution. I also sometimes read that both are *necessary*. Why
is this the case, if indeed it is?

Mark



Mark Sylvester
UWCAd
Duino Trieste Italy