Voyage of the Stars.

Chapter 567 Meaningful Cosmological Model

Of course, this is just a hypothesis.

After humans started trying to use physics to explain the end of the universe, various hypotheses emerged. The Big Crunch is another one.

The Big Crunch hypothesis is exactly the opposite of the Big Freeze Heat Death hypothesis. It believes that the universe will eventually stop expanding and return to the beginning of the Big Bang, that is, the singularity, in the Big Crunch.

Based on observational calculations, the Big Crunch hypothesis holds that the expansion of the universe will eventually stop, the distance between galaxies will be twice as far as the era of stars, and gravity will eventually overcome the original repulsion of the universe, bringing all galaxies and even the expanding universe into space. Pull back.

At that time, the next phase of the Third Star Period will not be a period of degeneration, but a period of contraction. During that period, the space observed by all civilizations in the universe will no longer be red-shifted. Instead, it will become blue-shifted because galaxies are competing to get closer.

According to this theory, about 500 billion years from the current star period, a natural disaster will occur in the universe, and all civilizations will be dying because of the natural disaster.

So what kind of natural disaster is it?

The Big Crunch hypothesis states that 500 billion years from now, the universe will begin a Big Crunch, and then eventually, 1 million years before the Big Crunch is complete, galaxies in the universe will begin to collide with each other and eventually merge together.

In this process, the radiation in the cosmic environment will increase in energy as the universe contracts. In this way, the stars at that time will be immersed in the hot blue-shifted light of other stars. At the same time, the temperature of the cosmic microwave background radiation will drop. Greatly intensified as the temperature of the universe rises sharply.

This process is like the opposite phase of the rapid cooling phase caused by the inflation after the Big Bang. It is a rapid heating process caused by the explosion and contraction.

For these two reasons, the stars will break up before the galaxies collide.

The temperature generated by the simultaneous action of these two reasons will make the background temperature of the universe exceed the temperature of any star, so that the speed of absorbing heat far exceeds the speed of releasing heat. At that time, all stars will disintegrate and become Extremely high temperature gas clouds.

In such an environment, intelligent life will be like being placed in a steamer or microwave oven, being roasted by the high temperature of the cosmic environment and unable to escape. In the future, the overall environment of the universe will soon return to the soupy chaos stage at the beginning of the Big Bang. The four basic forces will be crushed one by one into the original force, and then all the proud civilizations will be transformed into The quark soup universe is part of the environment, indistinguishable from each other.

Scientists who insist on this hypothesis believe that the purpose of civilization's great voyage is to escape the ending of the universe's big collapse. Go on the Great Voyage, pursue the first light in the universe, surpass that light, explore the mysteries at the edge of the universe, and find ways for civilization to avoid the Big Crunch.

However, opponents of this statement pointed out loopholes, saying that the rhombus crystal that originally represented the pioneers said that the pioneers' great voyage was not a romantic pursuit of the first light in the universe, but just a glimmer of hope in despair. , find a glimmer of hope to advance to a cosmic-level civilization.

Scientists who adhere to the Big Crunch hypothesis sneered at such rebuttals. They patched their own arguments and said that the great voyage of the sixth-level civilization may be to pursue the hope of becoming a cosmic-level civilization. After becoming a cosmic-level civilization, that is Find a way to avoid natural disasters caused by the big collapse of the universe.

Both have their own opinions.

On the basis of the big collapse hypothesis, two ending speculations have been derived, one is the big rebound, and the other is the cosmic cycle hypothesis, which is the theory of oscillating universe.

The so-called Big Bounce means that due to the huge energy of the contraction process, it is likely to cause a second Big Bang, thus giving birth to a new universe. In the new universe, the rules of the universe may be very different from those of the previous generation. As for the cosmic cycle hypothesis, based on the big rebound, the universe will expand again with a big bang, and then undergo another big collapse like the previous generation of universe, and so on.

Scientists holding two views believe that in our universe, there may already be civilizations that have escaped the Great Collapse of the universe. That is, the god-level civilizations they imagine are the surviving civilizations of the previous generation of universe. They think that perhaps through changes in the past, The existence where the laws of physics invalidate long-distance communication based on quantum entanglement is such a god-level civilization.

As for the Big Tear hypothesis, it is another direction of the ending of the universe under the heat death hypothesis. This hypothesis holds that the universe will eventually reach thermal equilibrium in infinite expansion, and then continue to expand infinitely under the infinite average characteristic trend of dark energy, eventually reaching the end of the universe. The entire space and time of the universe is torn apart.

After calculations, the Great Rip will occur ninety billion years from now in the Age of Stars. At that time, all matter will be torn apart by space-time itself, including the space-time of the universe itself.

The end is self-evident, and all life will perish.

However, some scientists who study superstrings and dimensions believe that the big rip may not be the end of the universe. The big rip may release all the dimensions in the universe that were originally curled up in the microscopic space, thus forming a series of different rules. sub-universe.

Relevant scientific teams that hold this view have even used superstring theory to build a universe model based on extra dimensions, which they call a brane universe. In the brane universe theory, scientists regard the large universe that humans live in today as a cosmic brane located at high latitudes.

Based on this theory, they feel that the ultimate goal of the Great Voyage may be to find the truth of the universe, and then transcend the membrane, allowing civilization to ascend to a higher-dimensional universe.

In short, every cosmological model provides an explanation for the destination of the Great Voyage that is currently known to humans. As for whether it is correct or not, there is no way to know. Anyway, humans cannot verify it now.

Of course, the emergence of every universe model undoubtedly provides mankind with an idea for the advancement of civilization.

Compared with the previous cosmological model hypotheses, the discussion of the brane universe is suspected of being a nesting doll, and relatively few scientists accept it. But compared to the parallel universe theory, it is much better.

The reason is the experience of human beings themselves. Scientists who refute the parallel universe theory believe that if there is a parallel universe, then a human civilization that has developed to an extremely advanced level on another timeline cannot watch the original Taixiao Yangxi being destroyed.

Infinite parallel universes, infinite possibilities, naturally there is a possibility for human beings to develop to the point where they can travel through parallel universes.

Based on this, the parallel universe theory has the least market among humans.

Among these theories, there is one that is quite inconspicuous, that is the vacuum decay hypothesis. Originally, this hypothesis was sealed in history by humans, but thanks to the words of the diamond crystals representing the pioneers, it was turned up again.

At that time, Rhomboid Crystal said that mastering vacuum zero-point energy is the basis for unlimited energy. It was this sentence that inspired human scientists to believe that the universe would usher in the vacuum decay of the universe because advanced civilizations borrowed vacuum zero-point energy without repaying it. .

The deep-seated reason for the despair and the only hope mentioned by the rhombus crystal may be the vacuum decay disaster of the large universe. Some scientists even believe that vacuum decay has actually already occurred. Now it has appeared somewhere or many places in the universe, and is spreading in all directions at the speed of light, destroying the universe.

(End of this chapter)