Question: A cosmological “what if ”
Here’s my question:
suppose for the sake of argument, the big bang happened somewhat differently, that it was like a huge mega supernova, and created super-duper massive black hole. A universal black hole. THE black hole of the entire known universe!
slowing down all the stuff that blew away from it.
the stuff coalesced into galaxies which are all still expanding away from each other.
such a scenario would have all the galaxies at different heights in a huge potential well. now…if our galaxy were further up such a potential well, all the light from all the galaxies further down would be red shifted.
also photons emitted from those galaxies would not only come ‘straight’ up the potential well but also would spiral up the potential well.
If our galaxy were near the ‘top’, light from one galaxy would reach us from many directions, all such photons would be red-shifted, and would have taken different lengths of time to reach us because of the many different spiral geodisics they could have taken. In other words, many of the galaxies we see could in fact be the SAME galaxy seen from a different direction in ...