The earth is a beautiful planet of life. There are not only millions of different kinds of life, but also intelligent life human beings. Why can the earth become a planet of life? The main reason is that the earth has all the conditions needed for the birth and evolution of life.
Among these conditions, we often say that water is the source of life. Without water, life on the earth would not be born. Therefore, the water in the life of the earth accounts for a large proportion. Is that the most important thing for life on earth? In fact, it is not. In fact, for life on earth, the sun is the most fundamental thing.
All life on earth cannot survive without the care of the sun. Even the dark creatures living in the ground will be affected and taken care of by the sun to some extent. Without the sun, there would be no birth and evolution of life, and humans would not be able to live as comfortable as they are now.
Before human beings walked out of the earth, our knowledge of the sun was very lacking. At that time, the sun we knew was a burning fireball, thinking that its burning was similar to ordinary chemical burning on the earth. However, as mankind entered the age of technology and walked out of the earth with the help of technology, we have gained more knowledge of the sun.
Now we all know that nuclear fusion reactions are always going on inside the sun. Its combustion is a nuclear fusion reaction. The basic fuel needed is hydrogen, which is ubiquitous in the universe. The sun has been burning for 5 billion years through nuclear fusion reactions, bringing light and warmth to the entire solar system.
Plants on the earth also continue to grow through photosynthesis. Photosynthesis produces oxygen, which becomes the basis for the survival of surface organisms. Humans need to breathe oxygen to survive, and oxygen comes from photosynthesis of plants, so from this perspective, humans cannot leave the sun at all.
However, as our knowledge of the universe continues to improve, it is discovered that stars are not eternal, they also have their own lifespan. Stars have different lifespans according to their masses, ranging from tens of millions to tens of billions of years. As a yellow dwarf, the sun is a medium-mass star in the star family with a lifespan of about 10 billion years.
Now our sun has been burning for 5 billion years, and the hydrogen in it will be consumed in another 5 billion years, and then the sun will reach the end of its life. After the star’s life span is reached, it will not completely disappear in the universe, but will transform into another kind of celestial body, which can be transformed into a white dwarf star, a neutron star or a black hole depending on its mass.
No matter what kind of celestial body the star finally transforms into, it will no longer undergo nuclear fusion and lose the original properties of the star. The end of stellar life also means the end of the star system. If a habitable planet with life exists, it will also be destroyed.
Seeing this, many people may say: The fate of the sun in the future is already doomed, and human beings will also lose the solar system in 5 billion years, and lose their long-standing home. So will the destiny of the sun really come to an end in 5 billion years? In fact, the answer may be unexpected.
It is true that under normal circumstances, the stars of the universe will continue to consume the internal hydrogen element, and then will continue to expand step by step towards the end. Such fate is destined in ordinary star systems, but is the solar system an ordinary star system? of course not.
The solar system is not an ordinary galaxy, because it gave birth to the planet of life here, and also evolved intelligent life human beings. When mankind enters the path of scientific development, it also means that we have begun a continuous exploration of the mysteries of the universe.
In theory, everything in the universe does not depart from the scope of science. Whether it is the origin of the universe or the evolutionary fate of stars, it is restricted and guided by science. Science is the core of the evolution and operation of the laws of all things in the universe. As long as we can master the ultimate science, we can master the destiny of the universe and change some of the rules of the universe, such as the end of the life of stars.
In essence, a star is a huge nuclear fusion reactor, which is transformed into helium through the continuous fusion of hydrogen elements, releasing powerful energy in the process. Helium will also continue to fusion, and eventually evolve into heavy elements such as iron. There are two main reasons why a star has reached the end of its life. One is that the internal hydrogen element is getting less and less, and it is finally consumed.
Another reason is that in the continuous fusion process of stars, various heavy elements formed by internal fusion are also increasing. These two reasons determine that the life of the sun is only 10 billion years. If we can solve these two factors, theoretically, the stellar sun can run forever.
The first factor is hydrogen, the basic fuel for nuclear fusion. Hydrogen is the most common substance in the universe. It was first formed at the beginning of the Big Bang. The largest amount is hydrogen, which accounts for more than 90% of the entire universe. .
Therefore, hydrogen is not scarce in the universe. As long as our technological strength reaches a certain level, there are methods and technologies that can continuously inject fuel hydrogen into the sun. In addition, we have also eliminated various heavy elements formed by nuclear fusion through technological means.
From the outside of the sun, we continuously inject hydrogen into it, and at the same time, we constantly clean out the heavy elements formed by fusion from the inside. With the help of such technology, will the sun still go to destruction? The possibility is very small. As long as the sun does not die, life on earth can survive.
Many people may say that this is a fantasy, no matter how strong the technological strength is. If you think so, you are wrong. Compared with the more complex and mysterious things of the universe, the scientific mysteries of stars are not particularly difficult. As long as humans have mastered nuclear fusion technology, they will soon be able to fully understand what is going on with stars.
The end of science is theology. When science reaches its end, it is possible to create the universe, not to mention keeping stars moving forever. As long as the scientific and technological strength is strong enough, we can solve a small star and sun, and let it live together with the universe forever.
With the emergence of human beings in the solar system, there is a high probability that the fate of the future will be completely different from other star systems. Other star systems continue to destroy and end with the arrival of the star’s lifespan, and with the help of human technology, the sun can achieve a longer lifespan even if it cannot live forever.
Compared with the threat of stars to the future of mankind, the contradictions within mankind are the biggest threat to human civilization. Once major changes occur within us, such as the outbreak of a nuclear war, the destiny of the earth and mankind may come to an end sooner. Even in the future, when mankind becomes an interstellar civilization, it is possible that interstellar war will break out internally, which will cause the regression of human civilization and even disappear completely in the universe.