Juergens' Electric Sun model?

Em Sb 28 Fev 2004 13:11, Donald Brewer, Jr. escreveu:
> Applying this analogy to the galaxy, some stars within the galaxy should be
> coming towards us and others should be traveling away from us thereby
> representing a mix of blue and red shifts. Perhaps I am mistaken (please
> correct me if I am), but to my knowledge, this is not the case. The only
> rational explanation that I feel might explain this would be if the
> universe is expanding at such a rate that the expansion within the galaxy
> is so great the distance two objects within the galaxy are moving apart
> from each other is greater than the distance that is being closed by an
> object passing us by.

I think that you are misunderstanding the scales where the cosmological
redshift occurs. Inside our galaxy, and even inside our group of galaxies,
gravity reigns, and thus we indeed *see* a mix of red and blue shifts. For
instance, the Andromeda Galaxy is blue shifted, for its is comming to collide
with the Milkway.

Now, over cosmological distances (tens of megaparsecs) the expansion of the
Universe wins the gravity, and then the groups of galaxies are getting far
from each other - that is, almost all of them are redshifted related to the
others.