First, the mystery of the star, many people may say that the star has nothing to explore. Human technology has long known that the burning of stars is a nuclear fusion reaction. It is a glowing fireball with no secrets. But in fact, the complexity and mystery of stars far exceed our imagination.
Stars are everywhere in the universe. There are at least hundreds of billions of stars in the Milky Way. They are dazzling beings in the universe, bringing warmth and light to the cold and dark universe. The birth of life is inseparable from the light and heat of stars. There is a galaxy around each star, and there are different numbers of planets orbiting it. Some galaxies are managed by more than two stars at the same time.
Stars are like the younger brother of the big boss of the universe, responsible for managing countless planets and other celestial bodies in the universe. So what are the secrets of stars?
The first is the way it burns. Modern science believes that the combustion of stars is nuclear fusion inside them. I'm sure no one can be sure of this.
Besides, it is very difficult to explore stars, such as the sun. Human detectors can only observe from a distance, and they can't get close at all, let alone enter the sun. One reason is that the sun accounts for 99.86% of the total mass of the solar system, and its gravity is also super strong. Another reason is that the humidity on the surface of the sun reaches 5000 degrees Celsius and will increase with the deepening, so the humidity inside the sun is too high for us to imagine.
The detector can't get close to the sun, or even go deep into the sun, so our understanding of the stellar sun is naturally limited. The only thing we can observe is the defensive material ejected by the sun, but we can't really solve the mystery of the sun just from these superficial things. Scientists want to know the details of a planet. In addition to the orbiter, it is more important to land on the detector.
Why do people know more about Mars? The reason is that Mars can land the probe, so that we can learn more about the geological structure of Mars. Why do we know so little about Venus? The reason is that Venus has a thick atmosphere, and the orbital probe cannot penetrate the atmosphere to see the clear surface of Venus. Secondly, the surface humidity of Venus is as high as 460 degrees Celsius, and it often rains acid rain, so it is difficult for the detector to land for a long time.
By the same token, if we want to fully understand the star sun, it must be close enough to the sun, even into the interior, so that we can know more and more about the sun. Once we have a comprehensive understanding of the sun, we hope to collect the energy of the sun for our use.
With the rapid development of human science and technology, there will be more and more demand for resources in the future, and the traditional chemical resources of the earth will continue to decrease, and we may face the problem of resource depletion in the future. Even though the earth's traditional resources will not be reduced soon, once human science and technology develop to a certain extent, those resources on the earth have limited energy and are useless. We need more powerful energy to replace them, and this energy is the energy of stars. Once human beings can collect and apply stellar energy, human civilization will usher in a new era.
Second, what is a black hole? What's the use? I believe everyone is no stranger to black holes now. In April this year, the publication of the first black hole photo in human history made people no longer doubt the existence of black holes. Einstein's theory of relativity guessed the existence of black holes, but in recent decades, we know almost nothing about black holes. Of course, what I really know about black holes now is only the first black hole photo, and other black hole mysteries are still unknown.