In this mysterious universe, there is a more mysterious celestial body, which has a closed horizon, all foreign substances and radiation can enter it, and nothing can escape from it, which makes everything powerful and ubiquitous-black holes. Black holes are matter. He is not invented by scientists, but actually exists in the universe. He is not a real hole, but a high-density planet. Black holes are the remnants of dead stars or explosive air masses, which are produced when a special massive Supergiant star collapses. A black hole must have evolved from a star with a mass greater than the Chandrasekhar limit, and a star with a mass less than the Chandrasekhar limit cannot form a black hole. Although most of us haven't seen him and can't get a glimpse of his true face, he is there, not sad or happy. Black holes constantly move and develop matter. All matter is constantly moving and developing, and black holes are no exception. Black holes exist in the center of stars, moving with the constant movement of stars and moving at high speed in the universe. Exercise is one of his characteristics. Black holes are also growing, from a smaller substance to a star and growing into a huge thing. We don't know how big he will eventually develop.
The discovery of black holes proves the continuous development of human understanding. In history, the first person to realize that dense celestial bodies can be so dense that even light cannot escape is the British geographer John Lin Kewei. 1796, French physicist Laplace predicted: "A luminous star with a mass of 250 suns and a diameter of the earth will not allow any light to leave it because of its gravity. Because of this, the largest luminous object in the universe will not be seen by us. " At the beginning of the 20th century, Einstein put forward the theory of relativity, and space-time will also slow down under certain circumstances. At that time, black holes had not been mentioned. Hawking also put forward the black hole theory. With the progress of human science and technology, astronomical telescopes, airplanes and other high-tech products have been invented, enabling scientists to explore powerful X-ray sources in black holes when material conditions are available. On the basis of summing up the experience of predecessors, they constantly innovated their research methods and started their work. With their unremitting efforts, they observed the changes on the telescope all the time, and even drove their own cars to follow the trajectory of the stars. Finally, the level of human understanding has been developed. The world can be recognized, and nothing can't be ignored, only things that are not recognized.