Dear All,
What mustn't be forgotten, and as the mere human brain has great difficulty with, is that space and 'everything' is infinite... it is timeless, it is absolutely incalculably infinite, it does not stop, and it has an infinite number of galaxies and star systems etc., etc., etc.. There is no limit, indeed, it doesn't matter how far one goes, it is absolutely impossible to get to the end of it........!!! - the end of it will never ever ever be reached. Whatever 'we' see from Earth, and whatever we might shoot into space to look further, is so microscopically small that it is irrelevant in the grand scheme of things (though obviously useful for 'generalising', and just experimenting with 'our' use getting out into our tiny bit of local space and getting to know it a bit. Ok, we have all heard of wormholes and other similar 'possibilities' that 'might' transport over huge distances, but, even if found and determined, these will still never ever get to the end of 'the void'... we then move onto/into 'dimension parallels' obviously, but we won't go down that route for now!
Regards, Bernard