I believe it is 'infinite' due to my understanding of the 'laws' of physics, gas expands, and gas is relative to temperature and pressure. Pressure isn't so much constant, but it atleast allows space to expand (if you call it a gas, we'll get to that later) however, temp is not constant. But I beleve space can be one of two things, (the 'empty' space) a 3rd state of matter, or 5th (again, LATER) since the supposed 'dark matter' hasn't been put in a container, I believe that is because it CAN'T be, it can't be solid, or liquid, which leaves 3 more choices. Gas (possible), plasma, which would burn everything aswell as cause space to be a vibrant rainbow of color, or, a 5th state (the name by the way is 'Bose-Einstein' for those who want to google it). However, the only issue with the 5th state possibility, is that for it to fall in a 5th state situation, the material needs to be cooled to a certain temperature, AND all the material would act as ONE atom. For instance, if you tried to put some of it into a ceramic jar for example, if would fall through like nothing was there to stop it. If there's a hole even only ONE-ATOM wide, all the material can flow through at one time. And the only MAIN issue is the temperature, it needs to be at a certain LOW temp so that all the material will act on ONE wave function, and all act as ONE atom. This is a huge issue when we're talking about ALL the empty space in the universe being ONE temp, but that can be solved with one question: "What if it's not all empty space?" What if there actually is something between the stars, and planets, and asteroids OTHER than dark matter? An invisible material, an invisible solid material or stars that have decayed PAST black holes, to a point where they just...dissapeared entirely? Where say a black hole ate ITSELF, then what happens? Does it just infinitely eat, or does it just go away? Also with this material, you wouldn't notice it at all, it would go through the craft, AND us, we would have no idea, and since it's colorless we'd probably have nothing to tip it off as even being there. But, since it's colorless, that begs the question, why do we see black? Do our eyes just keep searching for what's inbetween and just substitute nothing with black? IS there some big black 'wall' at the end? Whenever I have this talk with somebody, I can't help but think about all the questions, yeah sure, everybody has an 'answer' hell I got answers up the ass, but do any of them mean anything? Finite, infite? Just 14 characters on a screen 5 different characters on a keyboard. THEY mean nothing, words mean nothing. The only thing that means anything in a 'theory' is practice. The only thing a 'theory' is, is a hypothesis without any proof. I can theorize that I'm having steak for dinner, but does that mean it's true? Theories are meaningless, hypothosies are what really mean anything. You get a good hypothesis about the universe, then I'll be all ears, but until then I'm just going to agree with these 3 words. "Space is BIG!"