Why cannot we see other universes?

There are many arguments against the multiverse theory. And one of them is that we cannot see other universes.

If we think that the universe where we live is unique we might be the luckiest civilization in the history of time. We would be the only intelligent species in the entire universe. That is the only universe in the dimension.

When we are looking at the history of those "certainly they have not existed". We might remember that in history Earth was the only known planet. Until Galileo Galilei, Johannes Kepler, and Nicolaus Copernicus proved that Earth was only one planet in the group of planets.

Then we must remember that Edwin Hubble proved that the Milky Way was only one of the galaxies in a large group of similar galaxies in 1924. He proved. That Andromeda Nebula along with some other disk-shaped nebula. Were too far from us that they could not be inside the Milky Way. So Hubble proved that the Milky Way is not the only galaxy in the universe.

There is the possibility that light pollution is covering the other universes under them.

There is the theory that in space are billions of universes. This is called multiverse theory. The theory is that the universe is the bubble that formed after the Big Bang. The Big Bang theory is not closing other universes away, and there is the possibility that in space or our third dimension happens new Big Bangs all the time. But the question is why we cannot see those hypothetical other universes. Sometimes people think that maybe we are living in a black hole. But there is another answer to that question.

The answer might be found in the image about the highway at the night. When we are looking at that image. We see how so-called light pollution or the light that comes from bright street lights. Cover all other light sources under the bright light. That thing makes the illusion that there is only darkness around that road. So the stars and other radiation sources in the universe are covering the radiation sources in other hypothetical universes under them.

Radio signals that come from the other universes are covered by the radio "noise" that comes from the radio objects in our universe. The pulsars that are in our universe cover those radio signals under their noise. And if a plasma bubble surrounds our universe. There is a possibility that those distant radio sources are too weak that their radio impulses can penetrate our universe.

In the multiverse theory, the universes are not copies of each other. The energy that forms those universes is a little bit different. And that means the particles of the other universes are a little bit different. That means the particles are sending the radiation with a little bit different frequencies. And that thing causes the effect that the other universes would be very hard to detect.

There is also a time in hypothetical higher-dimensional universes.

The dimension is sometimes described as the "floor" between two energy levels. If the energy level of the particle is at a certain slot we can see that particle. But if the energy level is too high or too low we cannot see the particle because it sends radiation the energy level is too high or too low that we cannot see that radiation.

The difference between the multiverse and parallel universe theory is that the parallel universe theory introduces that the other universes are in different dimensions. That means that the energy level of the particles that are in the fourth dimension is higher. Then the particles that are in our universe. When the energy level of the particle is too high it would jump out from our third dimension.

The oscillation of the extremely high-energy particles is so different than the oscillation in three-dimensional material that they cannot interact. But even in a hypothetical parallel universe time is like in our universe. That parallel universe expands and those particles will lose their energy. So sooner or later those particles will drop to the third dimension.

The thing is that particles are also aging in the higher dimensions. The thing that makes those particles young is the energy load that increases the energy loss that causes because by the expansion of the universe. The thing that makes the time will stop in the particle that moves with the speed of light is that the particle cannot remove its wave movement. Because wave movement is traveling at the same speed as the particle that thing causes the particle remains young all the time.

https://en.wikipedia.org/wiki/Edwin_Hubble

https://en.wikipedia.org/wiki/Four-dimensional_space

https://en.wikipedia.org/wiki/Multiverse

https://en.wikipedia.org/wiki/Spacetime

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