Re: origin of life and such

Robin Mandell (rmandell@jpusa.chi.il.us)
Mon, 14 Dec 1998 21:17:06 -0600

At 09:47 PM 12/14/98 -0500, George Murphy wrote:
> Andrew asked.........
>> c) if neutrinos have mass would that open back up the possibility of a
>> eternally oscillating universe ( no beginning) or do those two ideas have
>> nothing to do with each other.
>
> A neutrino rest mass _might_ make cosmic expansion evenmtually stop &
reverse,
>leading to a "big crunch". But to get from there to an oscillating
universe is harder.
>It would require first some process to cause the universe to "bounce" at
some minimum
>size. Then you would have to contend with the effect which Tolman
discovered in the
>30s, that such a bouncing universe will actually _grow_ in size on each
bounce. It is
>conceivable that this could be avoided if the parameters characterizing
the universe
>were appropriately reset in each bounce but there is no good reason to
think that this
>should happen.
>
Hi George,
Thanks for the explanation. Just out of curiosity, do you think most
physicists are as sure of a beginining some say or is it very debated
still? Do you think
an oscillating universe is a theological problem?
Andrew>