Reality is much crazier than that. Some of the distant galaxies are causally disconnected from us: they're receding faster than the speed of light (by one out of the several definitions), and will (probably) continue to do so, so no information can travel between us. No causal interaction is possible. It's as if they were practically no longer a part of this universe -- they can't affect anything here, and nothing here can affect them.
(I'm not certain on this point, but I think some of the high-redshift galaxies we can see in deep field images are now causally disconnected. We're receiving some of their old light, but we can't send anything back anymore -- they've faded out into infinite redshift).
edit: Here's an article about this idea by Ethan Siegel, and its HN discussion thread (thanks 'petilon for helping me remember the author):
(I'm not certain on this point, but I think some of the high-redshift galaxies we can see in deep field images are now causally disconnected. We're receiving some of their old light, but we can't send anything back anymore -- they've faded out into infinite redshift).
edit: Here's an article about this idea by Ethan Siegel, and its HN discussion thread (thanks 'petilon for helping me remember the author):
https://medium.com/starts-with-a-bang/the-disappearing-unive... ("The Disappearing Universe")
https://news.ycombinator.com/item?id=7896776 (64 comments)