Re: Alternative cosmological model

>   It does make a couple of assumptions on the universe that seem strange.
> Firstly in general you need gravity to get convection.  The hot, light
> fluid elements rises and expands while the dense, cold elements fall
> down.  Thus you need to assume either a global direction in which
> gravity is pointing in the universe, or you need to assume that the
> universe has a center of mass, and thus gravity.  Neither one of these
> assumptions is supported by any existing observations, and both are in
> conflict with the cosmological principle, which says that there
> is nothing special with our position in the universe.  Essentially the
> universe looks the same from all points in the universe, which
> means that the convection currents will not know in which
> direction they should go.

All good points. When I thought of this idea, my first question was
does this convection happen in a 3D-space or some higher
dimensionality such as 4D-space or even space/time. Something that
require more thought.