it's complicated dude! Fck i'm no scientist talking bout the universe n shit. The space stuff happens in is constanly expanding, not like a border, but everything in it is all flinging out everywhere at the same rate, SO it'd all be the same, because it doesn't have a centre where its expanding from, it's ALL expanding, so nothing new can be created apart from whats within it and you can't get out of it, because 1. it probably expands faster than you and 2. your expanding with it. But it'd expand at the same rate it contracts, which it will, if you believe in the big bang, it'll all contract into nothingness again but you'd never know, idk.. hard to explain.. ask a physics guy, he'd explain it better