The vast universe has always been regarded as an eternal existence by many people. However, in recent decades, as scientists explore the universe in depth, they have discovered a cruel fact: in the distant future, the universe may also have a day to end.
If this is true, in what form will the universe end? Why is the universe coming to an end?
One of the main reasons is: dark energy .
Scientists do not know much about dark energy, otherwise it would not be called "dark" energy. According to current research, dark energy should be the void energy that is constantly derived from the universe. This is this energy that has caused the universe to expand at an accelerated pace.
The inflated universe is like an expanding balloon. If it expands to a certain extent, it may completely lose control.
The universe has been expanding since its birth in 13.8 billion years ago, and its expansion is getting faster and faster. This means that galaxies are accelerating away from each other, and the expansion of the universe is mainly reflected in the expansion between galaxies, on a large scale.
However, as the expansion intensifies, the expansion of the universe will gradually be reflected on a small scale. For example, one day in the distance, our solar system will also begin to expand, and then the sun, the earth, and even the human body will be pulled by the expanding space until the tiny atoms , neutron , electrons, etc., everything will be completely torn apart, and even the space-time structure no longer exists, and the universe will completely end!
This is the big tearing theory.
There is another theory that the expansion speed of the universe will gradually slow down and eventually stop expanding, and dark matter and dark energy reach a certain equilibrium. However, the possibility of this situation is relatively small. After all, dark energy accounts for 70% of the entire universe and has absolute dominance. At present, the speed of the universe's expansion has shown no sign of slowing down.
The third theory believes that our universe will eventually rebound or "collapse". If this is the result, it is probably the most gratifying thing. Why do you say so?
This result means that dark energy will become less and less in the future, so dark matter begins to gain the upper hand in the competition with dark energy, and then gravity begins to play a role, and the universe begins to stop expanding and contract inward.
The universe is getting smaller and smaller, and everything continues to gather inward. Next you also understand what will happen.
collapses to a certain extent, and everything will gather at an infinitesimal point, the so-called " singularity ", and then the singularity will trigger a new round of the Big Bang of the Universe and begin the next cycle of reincarnation.
keeps repeating, endless, forever!
No matter what the result is, it will happen in an extremely distant future. For people’s lifespan of less than a hundred years, we don’t need to worry. But studying the final outcome of the universe is not unnecessary. During the research process, we can discover more mysteries of the universe!
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