Tag Info

New answers tagged


What would we see just outside of it? Pure blackness or other expanding bubbles of multiverses? Outside our particle horizon we assume that everything is more or less the same like where we are, at least if the assumption of homogenity and isotropy holds. If we live in a multiverse there might also be other laws of nature beyond or horizon, but there is ...


You're exactly right. What you've discovered, is the cosmological horizon, the distance beyond which we can no longer have any causal contact with distant galaxies. The fact that galaxies that are out of causal contact with each other in fact appear to be so uniformly distributed in density and temperature is considered a major problem in cosmology, the ...

Top 50 recent answers are included