Quote:
Originally Posted by captain swoop
OK if you have a single gravitation source that is pulling the Universe towards it.
If I went out tonight according to your decription, I would see that (for example) in the North the stars moving towards it would be red shifted.
In the South stars further away being less strongly attracted than ourselves would also be red shifted. What about the stars to the East and West? or those directly above? they would be converging with us onto the distant point so they should show blue shift, not a red shift like the stars to the N and S.
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Well I dont think the angle of convergence would be enough to blue shift them. Approximate the angle of convergence to 0 ... lets say we converge on an angle of .0000000000001 degree. so basically 0. yes slight blue shift due to convergence.
Now that would ONLY be for those that are in a (nearly perfect ) plane tangent to the direction of gravity.
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However anything not directly in that plane would also have the same red shift to it. There is also the latency issue with light travelling from distant galaxies to us as they were moving and we are moving. So in short yes there will be some galaxies that will be slightly blueshifted ... but not many.