Alberto Monteiro wrote:
>
> Doug Pensinger wrote:
> >
> >1) Why do some galaxies collide if everything is supposed to be expanding? I
> >assume that the reason is some post BB phenomenon, but have no idea what that
> >might be.
> >
> No, the reason is simpler than that. The expansion of the big U is a *global*
> phenomenon, that doesn't prevent local collisions.
I don't get it, could you expand on that?
The *problem* with BB Theory is explaining *why* there are galaxies, and not
just a uniform
> soap of atoms :-)
>
But this seems far more intuitive to me. Wouldn't matter have a tendency to
congeal with the forces that caused the attraction in the first place
increasing as the mass increased?
Doug
