Author: Pentcho ValevPentcho Valev
Date: Sep 8, 2008 13:43
On Sep 8, 10:17 pm, Tom Roberts sbcglobal.net> wrote in
sci.physics.relativity:
> I belatedly realized I forgot to say this -- it brings a bit more
> perspective to the subject.
>
> Tom Roberts wrote:
>> When an astronomical object behaves just like the models of black holes,
>> we call them black holes. But we don't know what lies inside them -- the
>> MODELS contain a singularity, but we don't know what these objects
>> actually contain.
>
> When an astronomical object behaves just like the models of planets, we
> call them planets. But we don't know what lies inside them -- the MODELS
> contain matter of various kinds, but we don't know what these objects
> actually contain.
>
> When an astronomical object behaves just like the models of stars, we
> call them stars. But we don't know what lies inside them -- the MODELS
> contain matter and plasma and thermonuclear reactions, but we don't know
> what these objects actually contain. ...
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