Quote:
Originally Posted by adman
as galaxies pass through our own cosmic horizon and go over to the 'other side' - should we be able to observe this process. Shouldn't we be able to see galaxies in the throes of disappearing from our bubble?
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Through gravitation attraction the galaxy will tend to all move at the same speed. Expansion of space will result in the galaxy moving at c relative to our timeframe at sometime in the future, thus when the photons reach us it should appear as if the entire galaxy blinks out. Of course it will be many tens of billions of years until those photons reach us, so dont hold your breath that you will see galaxies disappearing any time soon.