[neutralino]

Originally Posted by PoPpAScience Neutralino; I have a hypothetical question for you. Now this is just a mind teaser. If say, there was a centre to the Universe, and all the Galaxies were being drawn towards it. Would they still register as red shifted, if they were accelerating as they get ever more closer to the centre? I have thought about this for a long time, maybe as long as 25 years. I am finally asking someones opinion, that may have a strong understanding of 'red shifts'.

If there was a centre of the universe then there are two distinct positions in which we could be. Firstly, we could be at the centre of the universe. Now, we would see all galaxies around us accelerating towards us. This would result in a blueshift for every galaxy. The other position we could be is somewhere else away from the centre of the universe. Here, we would see a mixture: the light from some galaxies would be blueshifted, as they would be moving towards us, and some would be redshifted as they would be moving away from us.

For anyone else reading, who may not be 100% sure, I should point out that there is no centre of the universe, and so this is all hypothetical.