Can any particle travel between universes?
If the multiverse theory would be true, and there are other universes, we might ask a one really interesting question, and that is: could object travel between universes. So when we are thinking about the edge of the universe, we might use the term "solid", if any object than a photon can cross that line.
The thing is that if some object wants to travel across the border of the universe, that thing would need so much energy, that we cannot ever imagine that thing. The object must win the gravity of the entire universe, which means that it would pull the particles back with the power of all galaxies and dark matter particles, and that means that the gravity level, what it must win is so huge, that we ever cannot imagine that thing.
The form of the universe is a very interesting thing to think, and when we are thinking about multiverse theory, that theory has brought many things in the mind of the theorists. One of the most interesting questions is can the light or some object across the line, what is called "the edge of the universe"?
In this case, we might ask, is the layer of the universe solid or is it something else? And then we might start to define, what the world "solid" means at this time. If we are thinking that the edge of the universe is the point, where our universes domination ends, and after that point, the gravity of our universe would not pull objects back, we might think the possibility, that could some object travel to another universe, if the supernova blows in that border?
In this case, the word "solid" means that nothing can go across that line, which is the shockwave of the Big Bang. And why we are interested in the edge of the universe? The thing is that the first formed stars would find at that layer. And this thing makes the location of the Big Bang very interesting. If we find the location of that object, we might define the distance of our solar system to that location.
So if we would find the galaxies or black holes that are farther from that location, that means that that object is forming before our solar system. And how simple this kind of thing seems in the paper. But we know that there is a big difference between practical solutions and theories. In this example, I started to write that the speed of galaxies is stable, and all galaxies are traveling at the same speed.
But we have forgotten that there is a possibility that there are galaxies, which are formed of dark mater or gas and dust. Those giant disks would have gravity but there would be no stars at all. And that means those objects would pull the other galaxies faster than others, which means that the galaxies would not travel with the same speed, and this means that in the practical world only the very big distances means that some galaxy is older than some other galaxy.
So can the object travel between universes?
If wormholes or "Einstein-Rosen bridges" (1) are real, the meteorite or asteroid could travel between universes. Can the energy of the supermassive black holes, what are oscillating with the same frequency be so powerful that the Einstein-Rosen bridge or wormhole would be forming between those objects, what are in different universes? And that means that there is a possibility that the object, what is formed of antimatter can travel to our universe or even in our solar system. There is a hypothesis that some supernova explosions are caused by antimaterial, what impacts with stars or planets.
But can object make that journey without wormholes? This thing is a really interesting question. The journey between universes would take so long time, that the neutrons of the atoms would start to break, which means that the material stops its existence. And that means that if some particle would slip to another universe, that would be meanless to the things in another universe.
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