A simple concept about our universe
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The beginning

In our "defined" universe, between all matter, exists almost a perfect vacuum. If our universe expands, what contains it? Or is it even contained? Obviously, at this point in my early stages of exploring the universe from a perspective of our law of physics, I simply lack too much knowledge to resonate with even the tinniest trustworty assurance since I have no real understanding what so ever of the matter. Never the less, I can't help to wonder: Isn't it a possibility that our universe, could also be contained or surrounded by the same particles that already exists "inside" our own universe?.

My intuition says yes; Our Universe could simply expand in an infinite space that contains more vacuum-like matter! If that was the case my next natural assumption would be that there probably exist more universes in this endless space. Then why are we only observing that every object are moving away from us? Wouldn't we be able to observe other 'interstellar matter', moving in other directions than just away? Going back to the assumption: Space is infinite(that's really freakin large), so perhaps we're simply just too far away from the rest of the matter to see objects that are heading in any direction, than away from us. We can think of the universe beginning from a Big Bang-explosion and now particles are spreading like a cloud from an explosion. Who knows — maybe we eventually also get mixed with other ancient universes over time. And by that time we might discover objects, not only moving away but towards us! With the help of mathematics and psysics, we can approximate our reality and describe it. And Maybe that's why the fundamentals in mathematics are dependent on numbers extending to infinity, infinity is hard to grasp but it might be more natural than we think, the limits of space might not be defined! My roomie silently listened to my rambles and then added: 'What if black holes got so big that they colapsed', whereas I smiled and followed his statement with: 'oh like Big Bang, so that would mean that the stuff that came out of it, is a new Universe. And the cycle repeats.

A black hole pulls matter from the universe before it would collapse and release another Big Bang. Matter will keep getting trapped in blackholes, the holes get bigger and bigger until they colapse and release everything that was inside. The release is our universe, now expanding and spreading into space while new black holes swallow more matter.

I tried to visualize the ideas with my 'art-skills' in Paint and a online free software below, image 1 and 2. ⬇

Image 1 - Concept with blackholes and expanding universe inside infinte space.

Image 2 - Many universes inside space.