yeah, i believe that the universe is a "finite but unbounded" volume, or a "hypersphere" back in the old days there was computer games where you would go off the left of the screen and reappear on the right, asteroids was one, i think. well, you can do that with a 2d horizontal where also you keep on passing the same game objects.
this is a special type of geometry, really it's a topology but the same thing applies to a sphere, as regards to the two dimensional surface. you can keep on going in one direction and will pass over the same points over and over again, later.
so, since circles, with their unbounded but finite geometry are the rule in space, and right down to the subatomic, almost everything is formed out of clusters of spheroid objects, in my opinion it makes sense that there is no "edge" to the universe. however, there would be a horizon - the point at which light being sent in your direction is emitted from an object that is travelling at the speed of light relative to you. before that point, you get the "doppler effect" or more famously known as the "red shift" and pretty much all objects seen in space are moving away from us, except for close stuff, mostly just in our galaxy.
so, the "edge of the universe" is, in my opinion, eventually going to be as stupid as saying there's an edge to the earth. it also causes an interesting conundrum then too because if space itself is fixed, ie, not expanding, then why is everything seeming to be flying away from us, that isn't really close and caught in the gravitational pull of the galaxy around us?
it doesn't really disobey the light speed limit, because only matter is bound by that. space itself isn't bound by the light speed limit, so if it was increasing, the only way you would know is by zooming in and in until you eventually find no more stars in your view. yes, they would be ancient, that's beside the point, but the void beyond, is not empty space. it's the point at which objects are moving too fast away from you for their photons to pass through that horizon point.
i know normie jerkoff debunking science types would say "you are saying the speed of light is not a limit" but i'm not, i'm saying, that this limit is contradictory to the a) ever increasing distance away that everything in the universe is moving from us, and b) we are on such a small scale that it's possible that if the whole universe is growing like a millimetre per femtosecond, and the finite unbounded volume model is correct, then there IS objects moving away from us faster than the speed of light. but you wouldn't be able to know, unless you saw an object dip out over that threshold into the void.
i suspect we may be close to being able to see that far out so it's possible at some point the astronomers are going to be scratching their heads trying to explain why it looked like a star just totally blipped out of sight. this would be the explanation.
anyway, part of the reason why i came up with the idea of space itself expanding, is because it gives a basis for the idea that matter is in fact a process of waves moving over the "fabric" of space, that have properties that re-converge their position by "directing" the space to expand out of the objects constantly, and this "directing" is a form of basically limitless (effectively as much as you could possibly use) energy. that maintains the inertia of matter. stuff keeps moving, spinning, and interacting in their fields because of something to do with the way that matter retains its relative position to other matter, creates a soft-edged "bubble" around objects that when these bubbles touch, like two drops of water, they optimize their volume to maintain efficient release of that pressure that would otherwise drive them apart at light speed.
so it's like a fluid with zero mass, that is constantly flowing outwards from every point in space. and actually, every point in space, never actually moves, it just pushes space around itself to change relative position to another object (this is also why newton's law you have to push back to go forwards). you are pushing the *space* from in front of you, around you and behind you.