In our vast universe, the most terrifying celestial body is the black hole, because its gravitational pull is very large, so no matter what celestial body is, once it encounters a black hole, it cannot escape.
Even light can't escape from the black hole, how big is a black hole, do you really have an idea, its mass is dozens or even hundreds of times better than the mass of the sun, any object can only operate on the periphery of the black hole, but if you accidentally cross the boundary, you will be dragged into the black hole by strong gravity.
Eventually disappearing into the abyss of the universe, the black hole is like a great demon king with a huge appetite, any star that meets it will be eaten by it and disappear in the universe.
But do you know how black holes are created, let's put it this way, a star is preparing to perish, and the core begins a series of changes under its own gravity, first contraction, then collapse, and then a powerful explosion.
Due to the large mass of the star's core, the contraction process will continue to continue, and the repulsion of the neutron cannot be stopped, and the neutron itself will be crushed into powder directly under its own attraction when it is squeezed by gravity.
After so many reactions, what is left is an extremely dense substance, which is a black hole, and because of its extremely high mass, the gravitational pull generated is naturally very high, causing any object that comes close to it to be sucked into it.
Human beings seem to be inherently full of fear of black holes, but they are also full of curiosity about them, and today we will explore five truths about black holes.
First of all, the black hole will distort space-time, if an object happens to come near the black hole, then the object will be pulled by an extremely terrifying gravitational pull, and the object will continue to move closer to it, and finally fall into the accretion disk composed of matter in orbital space, and finally slide past the "point of no return".
However, once it crosses the point of no return, there is no chance to escape, and what awaits it must be swallowed by a black hole, but before it is swallowed, it will be pulled and deformed by the gravitational force of the black hole itself in the process of rushing to the singularity, and will eventually be pulled into a slender body like a noodle.
The number of second black holes is too large to count, because we rarely see black holes, and we have never heard of them, so we all think that there are very few black holes, and even one will come out in many years, but the number of these black holes is actually not a lot, but we can't see and don't know.
For example, the Sagittarius A supermassive black hole has about 10 million to 1 billion such stellar mass black holes in the Milky Way.
This is only in the Milky Way, let alone the entire universe, the universe is too big for us to estimate, and there are even hundreds of billions of black holes in the universe, and we can't count the black holes that have reached the mass of stars.
The third point is that black holes are not only devoured and will not come out, about this, according to our cognition, black holes are like pixiu, only in and out, as long as they are swallowed by black holes, they will disappear completely, in fact, this is not the case.
The real black hole is actually different from what we imagined, in fact, it not only swallows, but also spits out the matter that has been swallowed at a specific time, which is very scientific.
According to scientists' observations, the Sagittarius A supermassive black hole at the center of the Milky Way occasionally spits out planet-sized clumps of material after devouring galaxies.
Moreover, the debris brought by these mass of matter is actually not stable, and with the kinetic energy brought to the mass of matter when the black hole is spit out, these debris will rush into the galaxy at a speed of 31 million kilometers per hour.
And once a planet is in its orbit, it will suffer a major blow, and may even be destroyed, and we can only hope that it does not come to our solar system.
Fourth, black holes can also create stars, according to research, black holes do not only swallow, although those swallowed galaxies will disappear for a short time, but supermassive black holes, will also release a kind of matter by themselves, and these materials will also aggregate in the black hole.
Eventually, a new kind of star will be formed, but some of this matter will fall into deep space far away from other galaxies, you may not believe it, but in 2018 the journal Nature published a study.
Those supermassive black holes, which not only produce new stars on their own, but also control the number of stars by directly affecting the rate at which stars are formed, doesn't sound particularly magical.
Fifth, black holes are not the same, these black holes are like people, and a South African astronomer discovered a region in space where there are supermassive black holes in galaxies, and these black holes rotate in the same direction.
The same rotation seems to have been arranged in a way that even astronomers can't explain, and researchers say the only possible cause of this strange phenomenon is a coincidental event that occurred during the formation of galaxies in the early universe.