>>14000406It seems like our universe resembles a raindrop. Think of a raindrop's motion as it falls from a cloud to the ground. Every molecule is moving the same direction - downward. But also the water molecules in the raindrop each have their own kinetic energy, temperature changes, and motion. Some are colliding. Some are freezing. Some are evaporating. Some are distorting the shape of the raindrop as it falls. This represents the universe and the planets. Expanding outwards in the same general path, but with their own idiosyncratic movement based on gravity, fission/fusion, etc. Some of these motions take millions of years. As opposed to a raindrop, which takes a couple of minutes to hit the ground. But we know now where rain comes from. We know it will never "run out" because of the water cycle. It's possible that matter is the same way.
I think logically the outer limit(s) of our universe are like the edges of the raindrop. It's just the natural convergence of space and matter to an end point. Or a thin layer. Or zero Kelvin condition. Or whatever. At these points are dark matter or black holes. Pathways to a different plane. For example, if you are inside the raindrop, you can exit it. You will be on a different plane known as "the air." BUT... you will still be connected to the raindrop. How? Because all matter on Earth is connected to all other matter. Air, water, land. It's ALL matter. The reason you can hear your TV is because the speakers vibrate the air molecules next to them. And those air molecules vibrate the air molecules next to them. And so on. Until the air right next to your eardrums vibrates and your brain interprets the vibrations as sound. The point is: all of those molecules are connected. At all angles from the TV. I think space is the same. Even if you travel through a blackhole or dark matter, at the edge, all of space is connected. But it could be shaped like a helix or concentric circles or a staircase or a convex lens or who knows.
