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Originally Posted by vjk9
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The speed of the galaxies at great distances, orbiting around the center of gravity for the universe, would be phenomenal, absolutely incredible. It would be far greater than what would be required for the galaxies to be simply receding.
In order for the galaxies to be in a stable orbit, it requires an incredible amount of attraction between the galaxies and the center of gravity for the universe.
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The idea of a co-moving expansion and all matter being central is due to it being in the big bang at the same point at one time. So the earth can be matter central but I guess if you are looking at center of universal gravity it gets more complex.
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For such an incredible amount of attraction to exist at such great distances, a small change in the percentage of the distance results in a considerable change in the attraction. Thus, circular orbits would be stable, but elliptical orbits would not. In fact, circular orbits become rather strictly enforced by gravity. One possibility is that gravity eventually increases with distance instead of decreasing. Maybe that happens, but maybe not. If so, as a galaxy would deviate from a circular orbit and come closer to the center, gravity would be reduced causing it to travel further out. If it deviates away from the center, gravitational attraction would increase causing it to travel closer to the center. Thus, circular orbits become the most stable, perhaps strictly enforced by gravity.
I do not know if gravity would change so much with distance that, over great distances, further distances would actually increase the amount of gravity or if the change in gravity would be less drastic than that.
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There 'appears' to be an anti-gravity effect at distance and mainstream has labeled it dark energy and it seems to increase with distance. The thing is that even though all might agree that gravity would be felt across the universe there doesn't seem to be any one suggesting that expanding space moving faster than gravity is in relative violation as we would also be in regard to the distant object (ie moving faster than light relative to the field of gravity from original sources).
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I do believe that the only factor affecting the red shift is the motion of the galaxies. It is important, however, to consider another possibility. Time might slow down more the further a galaxy is positioned away from the center of the universe, even without the galaxy moving. I do not believe such is happening, but I do need to bring it out as a possibility.
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Time could be local but needs higher structures in which case you see the universe based on an average or median time relative to yourself. Time is probably the hardest fight to take on so I certainly wish you all the best if you do take that path (higher spatial structures is an interest to me but this is clearly your idea and needs to be thought along the lines you have set out).
Presumed position and motion of the galaxies are being looked at with more data coming in all the time. Your mathematics well exceeds mine so I will keep reading with interest, cheers
