Yes, but by the time the light from the FTL galaxy reached the half-way-point galaxy, the half-way-point galaxy would be beyond the cosmological event horizon as well.matt.o said:This is a common misconception. Galaxies receding at faster than light speeds can still be observed by us. If you think about it a little it will become clear. Consider a galaxy travelling with the hubble flow at such a distance that it is receding at faster than the speed of light. Now consider a point half way between us and the FTL galaxy. The recessional velocity here is not FTL, wrt us and the FTL galaxy. Hence light can get to this midway point from the FTL galaxy. If light can get to the midpoint, then it can also get to us. If you search for Tamara Davis and Charlie Lineweaver on google scholar or ADS, then you will come up with references on FTL recession.
One thing that may end the big-rip = big-bang scenario is this: if the quantum fluctuation are not scale invariant, then the scale factor of space cannot expand forever to create big-bangs over and over again. If particles are extended objects, then this cannot happen. If particles are singularities, then this might still happen unless the path-integral formulations are not scale invariant. What do ya think?This is very hard to prove or disprove. I would suggest that there could be no observational evidence since the big rip occurred before the big bang (hence unobservable to us).Originally Posted by Mike2
Some pose that the CMB proves an initial big bang and subsequent expansion. I don't disagree. I'm suggesting that there may be more than one big bang and more than one CMB created each time the universe experiences a big rip. In other words, a big rip causes a new big bang with all the characteristics of the one we see now. Is there any observable evidence that can disprove this big rip = big bang theory? Thanks.