"Bjoern Feuerbacher" ha scritto nel
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Luigi Caselli wrote:

But "rushing away" does cause a Doppler shift, does it not?

In the standard big bang theory Doppler shift is the reason for "rushing
away".

Sorry, but this makes no sense. Did you want to say:
"In the standard big bang theory 'rushing away' is the reason for
Doppler shift"?

If yes: that would make sense, but would be wrong nevertheless..

You're right (is the "rushing away" that creates Doppler shift), but why is
wrong?

In other less popular theories this is not so sure...

But big bang is so fascinating that almost noone has doubts about
strange
facts as a galaxy formed only 750 millions years after the big bang (a
bit
too young)...

This is, AFAIK, consistent with the current view on galaxy formation.
Not a trouble for the current hypotheses.

I'm not so sure. See for example
http://www.cnn.com/2004/TECH/space/0...ind/index.html
Noone seems to have answer to a young galaxy supercluster like this one.
If there are problems to explain galaxies of 10,8 billion years ago how can
explain a so young galaxy (13 billions years ago).
Maybe superultraspeed inflation?

seen using gravitational lens...

Yes. So what?

No problem, only it's a bit funny to see multiple copies of the same object
due to gravitational lens...

some sort of great
illusionism like dark everything (matter, energy, holes, etc.) that we
discover day after day...

What's your problem with those?

I don't like claiming forces from nowhere to save any theory.

But if I can believe Italian politicians I can believe everything...

One should never "believe" a physical theory. One should study it and
accept its validity based on the evidence.

There's no more evidence in cosmology, only indirect effects that you can
explain as you like...
For example:
Strange galaxy rotation? Introduce dark matter of the right quantity to
justify it (very easy).
Ultraspeed galaxy "rushing away"? Introduce dark energy of the right
quantity to justify it (very easy).
Search some less dark solutions? Too difficult and risky...

Luigi Caselli