Black hole: In the dark world, the black hole that devours everything is invisible, but it exists mysteriously in the universe. Theoretically, it is a bottomless pit with infinite density, infinite heat and infinite volume. As long as you enter a black hole, everything will be torn, and even light can't escape.
A black hole is like the singularity of BIGBANG, but it looks as if any physical theorem has failed. It is a bottomless pit formed by gravitational collapse after the "death" of supermassive stars. With the black hole crawling, the surrounding celestial bodies will be swallowed up, so it is not an exaggeration to use the word "terror" to describe its existence.
White hole: the jet source in the universe. When you think a black hole is scary and crazy, there is another celestial body that is even more exaggerated and scary. This is a white hole. Scientists infer that white holes exist in distorted multidimensional space-time. The ultra-dense matter in the white hole is obtained when the black hole is formed by gravitational collapse, and the black hole changes from internal contradictory motion to expansion state and is ejected from the central singularity.
According to Einstein's general theory of relativity, if there is a black hole, there should also be a white hole, with a black hole on one side and a white hole on the other. Some people think that the white hole originated from the whole Big Bang. When the universe explodes from the ultra-dense state, some ultra-dense substances are still in a strange state after being thrown out, resulting in delayed explosion.
However, according to the concept of thermodynamic entropy, entropy will continue to increase, while white holes will reduce entropy, which does not conform to the thermodynamic theorem. Some scientists think there is a connection between the two. Compared with the black hole devouring the surrounding celestial bodies, the white hole exhausts it, which may become a jet source in the universe, and can continuously provide material and energy to the outside world, such as gamma ray bursts. Theoretically, the white hole is a special cosmic celestial body, which can continuously emit and absorb.
White hole: Crusher of celestial bodies We have observed that black holes devour the surrounding celestial bodies, but the internal structure is unknown. It is impossible to observe how celestial bodies break down. Scientists speculate that these celestial bodies will be instantly decomposed into particles and ejected when they reach the vicinity of the white hole. So if black holes exist by devouring celestial bodies, then white holes are celestial crushing machines.
Suppose a person enters a black hole without death. Under the strong gravity, time becomes super slow and even static. Thousands of years later, he arrived near the white hole and was instantly crushed and decomposed into countless particles, which were discharged from the white hole.
According to the white hole theory, some people think that the core of quasars may be white holes. When the ultra-dense substance in the white hole is sprayed outward, it collides violently with the surrounding substances, releasing huge energy. Therefore, some phenomena such as X-ray, cosmic ray radio burst and Shuang Yuan radio may be related to this effect of white hole.
What happens when a black hole meets a white hole? Black holes keep swallowing matter, white holes keep spraying matter, and the matter sprayed by white holes will flow into black holes like water injected into drainage pipes. The more black holes "eat", the more supermassive objects we can't imagine are formed. This may be a "war" that lasts for thousands or even tens of thousands of years. But in the reincarnation of everything, I believe that black holes will eventually shrink and decay, black holes will eventually disappear, and the universe will come back and enter the next reincarnation. But how long it will take, humans can't imagine.
At present, the white hole is still in the scientific theoretical model, and there is no evidence to prove its existence. However, everything is relative. Since there is a black hole, there is naturally a white hole, and the black hole is so cow 13 that the white hole is not bad. The unknown is always full of mystery, and scientists' guesses about the white hole are even more frightening and reasonable.