People on earth, many years ago, thought our planet was flat, right? but it turned out to be round. Maybe the univers is round 2 but in stead of us being outside of the sphere, we're inside, sort of like a galaxy. And their wer many universes that are in sumthing even bigger, wich is in sumthing even bigger...
that would mean that their's an infinity of space, but not of our univers... pretty complicated