Re: [asa] Cosmological Evolution?

From: Jim Armstrong <>
Date: Sat Dec 30 2006 - 12:06:07 EST

Others more expert than I will undoubtedly respond to this, but as I
recall the orderly succession of fusion process stops abruptly at iron.
The stellar mass then collapses abruptly and when the dynamics of this
collapse reach the right point, a nova (super) occurs [sorta not orderly
in the previous sense]. It is this cataclysmic nova event that is
responsible for the creation of those atoms heavier than iron. It is
another of those "destructive" bookends to what has up to that point
been a sort of relatively orderly non-biological evolutionary process.
It is still a marvelous process overall, repeated over and over.


Bill Hamilton wrote:

>--- Gregory Arago <> wrote:
>> The cosmos is certainly 'changing,' but I wonder why people (esp.
>>cosmologists) would use the concept of 'evolution' to describe that/those
>Howard Van Till in his book, "The Fourth Day..." describes the process of
>stellar evolution, wherein a star begins by fusing hyhdrogen into helium, and
>when the hyhdrogen is depleted, burns helium, fusing it into a heavier element
>(I forgot which). This process continues, yielding ever heavire elements, which
>are thrown off -- through boiling off or through novas -- to make them
>available to other stars or for planet formation. It is an orderly process
>which generates all the elements of the periodic table -- thus enabling the raw
>materials for life to be available. One dictionary definition of evolution
>is "1. A gradual process in which something changes into a different and
>usually more complex or better form." (American Heritage online Dictionary) So
>I don't think "evolution" is off the mark.
>Bill Hamilton
>William E. Hamilton, Jr., Ph.D.
>248.652.4148 (home) 248.821.8156 (mobile)
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Received on Sat Dec 30 12:09:19 2006

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