There is the possibility that the anti-universe where time moves backward exists.

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Did an anti-universe where time runs backward exist before our universe? The fact is this. If that universe exists it advances in an opposite way to our universe. That anti-universe forms as cold. And then it will start to warm, and finally, it will turn too hot for the particle. 

So the intensive heat of that anti-universe will destroy particles and turn them into wave movement before it will fall into a giant black hole. Because that black hole will stay in absolute emptiness it starts to erupt. And that eruption forms the new Big Bang. 

If there was a universe before our universe. The ultimate fate of that universe must be the Big Crunch. 

That thing means that the universe and anti-universe could alternate. So if there was a universe before our universe, the ultimate fate of that universe would be the Big Crunch. That thing means that the anti-universe was before our universe. 

There is the possibility that when the universe will start to fall before the Big Crunch. The time would start to travel backward. The anti-universe will also face a Cig Crunch if that thing is exist. During the Big Crunch, the universe will turn to extremely high temperatures. 

The idea of the anti-universe where time runs backward is interesting. As I wrote before there is the possibility that the universe forms another universe or a giant quantum bubble. The energy would travel to the middle of the universe. 

And that means the time travels backward in that anti-universe. The anti-universe can explain dark matter. The antimatter universe is similar to our universe. But the material that forms the antimatter universe is mirror material. When antimatter impacts material. That causes annihilation. 

The entire material and antimatter both turn to energy. So if the antimatter universe impacts our universe that causes the ultimate end of both universes. In some very rare ideas, the Big Bang was the antimatter annihilation. If the antimatter galaxy hits the material galaxy that causes the ultimate destruction. One gram of antimatter would detonate the entire Earth. So what if the galaxy-size antimatter clouds will impact? 

Image 2: The Big Crunch. The vertical axis can be considered to be the expansion or the contraction with time. During expansion, time moves forward, and during the Big Crunch, time moves backward

But in the anti-universe energy flows to the center of that universe. And that thing causes the time travels backward if we think that time is energy. 

When the expansion of our universe causes, the energy level of the universe is decreasing. The energy flow in the anti-universe would make the energy level in that anti-universe rise. That means the ultimate fate of that hypothetical universe is the big crunch. Or actually, that hypothetical universe advances backward than our universe.

Because the electromagnetic wave movement hits the quantum bubble of the anti-universe that thing sends that wave movement to the middle of that anti-universe. And that thing will increase the mass of that universe. That thing causes a gravitational effect that pulls the mass and energy together. So in the distant future. That anti-universe would turn to extreme hot plasma. And then the plasma falls into the black hole. And when the black hole is in the middle of emptiness it explodes. 

This thing causes interesting vision. If there is a quantum bubble that sends wave movement to the middle of it and forms the black hole. The time is traveling backward in that bubble. And then, there is a possibility that there is a cut in energy flow. That causes the black hole in the middle of the quantum bubble explodes. 

Erupting a black hole would send the expanding material ball against that falling energy. So if the eruption of the black hole is strong enough that thing forms the new Big Bang. Because the gravitation of that new universe is dominating.

But the radiation pushes the original quantum field outside that can form two layer-universe. In the inner ball, time moves as it moves in our universe. But between the most out and inner quantum bubble time travels backward. 

The idea of the universe where time moves forward, but what is surrounding the area where time moves backward might seem very interesting or special. But as we know, time moves backward in the black holes. The reason for that is that the wave movement moves to the center of the black hole. 

In the cases like universe-size quantum fields, the electromagnetic wave movement acts like it acts when it hits to steel ball. The radiation starts to flow around the ball. And then the ball conducts part of that radiation in the middle of the ball. That thing requires that there is an electromagnetic vacuum in the quantum ball. 

There is the possibility that this kind of area is existing also in our universe. The requirement is that the radiation falls into that bubble. And the rising energy level will reload the energy that material loses when the universe expands. That kind of thing can make the material young again. 

https://www.popularmechanics.com/science/a39745160/anti-universe-running-backward-in-time/

https://www.rankred.com/anti-universe-exist-before-big-bang/

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

Image 1: https://www.rankred.com/anti-universe-exist-before-big-bang/

Image 2: https://en.wikipedia.org/wiki/Ultimate_fate_of_the_universe

How the hypothetical universe where time moves backward might form?

We believe that the origin of our universe was in the Big Bang the great explosion that released material to space and time. When the universe was extremely young. It looked a little bit like a quasar. There is the possibility that there was some kind of asymmetry in the eruption of material. 

And the reason for that might be that the object that released material had some kind of polar structure like black holes has. The polarised object could be from the material jet that is similar to that quasar's release. But that jet was much larger. The universe is surrounded by plasma or a quantum bubble that pulls energy from inside the universe. And that energy movement causes the expansion of the universe. 

Everything happens in the opposite order in the anti-universe. The reason for that is that the birth of the anti-universe began from the core. Inside the core of the anti-universe was the electromagnetic vacuum. 

And the wave movement started to drop in that EM-vacuum because energy travels always from the highest energy level to the lower energy level. So because the wave movement travels to the center of the anti-universe. We cannot see that thing. The electromagnetic vacuum will pull all wave movement inside the anti-universe. 

And the reason for that is simple. The core of the hypothetical anti-universe is at the highest energy level in that structure. In our universe, the inner areas of the universe are at a higher energy level than the core. 

Image 2) Quasar 3C 273 and its jet.

So when the material is released from the universe it lost a little bit of its energy. And that means that another universe has a lower energy level in its plasma field than our universe has. That means energy travels to another universe from our universe. 

The remarkable thing is that in that antiuniverse the plasma field is at a higher energy level than the inner space of the anti-universe is. And that causes that energy falls inside that bubble. The reason why the energy level in the anti-universe is higher than inside it is simple. That hypothetical antiuniverse started to form from the outside to the inside. 

And because wave movement travels to the center of the anti-universe. That thing means that the energy will load to particles inside the anti-universe. And that means time travels backward in that hypothetical universe. The material will turn younger until it cannot store any more energy or starts to release that energy. When material releases energy it turns older. 

And finally the theory about the timeless civilization. 

There is the possibility that somewhere inside the universe is a civilization that can live forever. That hypothetical civilization would cover its planet or entire solar system with a plasma ball that rotates with the speed of light. 

Then that plasma ball will shoot energy rays. And that thing makes the material turn younger. The virtual crossing of the speed of light can be made by putting the cylinder or ball-shaped object rotate with the speed of light. And then the energy rays will aim at that structure. Because the energy level inside that structure is lower than in its core. The wave movement travels only to the inside of the structure. 

And that thing can cause an effect where quantum fields of material will pump by extra energy. Another version is just to make the ball-shaped physical or ion-gas structure and then the EM radiation will impact that structure. There is the possibility that this thing can make energy travel in only one direction which is to the center of that ball. And that thing could load the quantum fields of the material with the new energy. So that kind of thing can make the material young again. 

If there are two layers in that plasma or quantum ball there is the possibility. That the wave movement travels in that electromagnetic vacuum. There could be the superpositioned electrons that are making it possible that energy can travel across that vacuum. 

And that thing makes that hypothetical solar system invisible.  The idea of some quantum stealth systems might be that the wave movement will put to travel inside the plasma or quantum bubble. And it travels only to the center of the bubble, which means the observer would not see the target, because the quantum bubble denies the reflection. 

https://www.learning-mind.com/there-may-be-a-parallel-universe-that-is-moving-backwards-in-time/

https://nypost.com/2022/03/21/study-claims-an-anti-universe-where-time-is-backwards-may-exist-next-to-ours/

https://www.livescience.com/multiverse 

Image 2) http://pages.astronomy.ua.edu/keel/agn/3c273.html

https://miraclesofthequantumworld.blogspot.com/