How many black holes are there in the universe and which is the largest black hole in the universe?

The ubiquity of the existence of black holes.

According to the gravitational theory of black holes, the existence of black holes is universal. Because black holes are formed by the gravitational collapse of stars that burn up their nuclear fuel, in the long history of the evolution of the universe, there are countless stars that have burned out of fuel and become non-luminous planets, and the number of such stars is even comparable to the stars that are currently glowing, if they all become black holes, then black holes are as many as the stars in the sky now, everywhere.

Black holes attract nearby light, radiation, nebulae, and planets, and the mass and volume become larger and the gravitational pull becomes stronger, thus sucking more material into it. Growing black holes are like huge vortices that are constantly getting bigger, greedily devouring nearby celestial matter, and after a long period of evolution in the universe, there should be many black holes the size of the Milky Way.

Black holes are mathematical models of large-mass, ultra-high-density objects proposed by astronomers, but due to their special physical properties, they cannot be directly observed. All current evidence of black holes is circumstantial. Scientists simply "suspect" that there are various types of black holes in the universe, distributed throughout the universe (mostly in galaxies**), and their number is huge.

There are countless universes where stars** continue to form black holes.

Probably infinite, because every blue giant** is followed by a black hole.

It may well be the universe itself.

Black holes come in a variety of forms, from "quantum black holes" that are only the size of an elementary particle and have a mass of only a few hundred thousand tons, to stellar black holes and giant black holes at the center of galaxies.

Theoretically, a black hole doesn't have to be an infinite point of density, as long as the gravitational pull generated by its relative density (density) is enough to "trap" light. Theoretically, a black hole the size of a galaxy can have an average density that is even smaller than water.

Based on this calculation, based on the average density of the observable universe, it is likely that light can also be imprisoned. In this sense, if our universe is distributed in positive curvature, it is likely that our universe itself is a huge black hole.

The mass of a black hole is 18 billion times that of the Sun, which is the previous record holder. The closest black hole to Earth The closest black hole to Earth is 10,000 light-years away. As named v4641 .

The fastest spinning black hole in the universe Black holes don't just swallow gas in space, if the stars that form black holes are spinning fast.

The farthest black hole from Earth The farthest known black hole from Earth is in the NGC 300 galaxy 6 million light-years away.

Talking about the universe, you can't say that it is the biggest, because you don't even know its boundaries in **?

The largest known black hole in the universe is ton618, located in the constellation Canis.

In OJ287, the gravitational field of the larger black hole caused the orbit of the small black hole to tilt by an incredible 39 degrees, which significantly affected the collision of the small black hole with the surrounding material of the old black hole.

According to astronomical observations, OJ287 quasars have more than ten explosive bright phenomena, Finland's Turla Observatory, the astronomical team led by Maury Waltenn, the small black hole motion level ratio has been measured and analyzed, and they estimate that the mass of the larger black hole is about 18 billion times that of the sun based on the orbital period of the small black hole.

Causes of black holes

The creation of a black hole is similar to that of a neutron star: a star is preparing to perish, and its core rapidly shrinks and collapses under the action of its own gravity. When all the matter in the core turns into neutrons, the contraction process immediately stops, and it is compressed into a dense star, which also compresses the space and time inside.

But in the case of black holes, the mass of the star's core is so large that the contraction process goes on endlessly, and even the repulsion between neutrons cannot be stopped. The neutrons themselves are crushed into powder by the attraction of the squeezing gravity itself, leaving behind a material of unimaginably high density. The gravitational pull due to the high quality is such that any object that comes close to it will be sucked into it.

The existence of black holes is one of the most well-known theories of relativity. In 1916, shortly after Einstein proposed the general theory of relativity, the scientist Schwarzschild deduced a special solution from the gravitational field equation of the general theory of relativity, which predicted the existence of an extremely special class of celestial objects in the universe - black holes.

A black hole is a celestial object with an extremely strong gravitational field, and it is also the densest object in the universe.

The largest black hole in the universe discovered so far is 66 billion times more massive than the Sun and is located at the center of the quasar ton618, 10.4 billion light-years from Earth.

According to Hawking's speculation, there is a singularity at the center of the black hole, which is infinitely small in size, infinitely dense, and infinitely high in curvature of space-time.

There is an event horizon around the black hole, and because the gravitational pull of the black hole is extremely strong, the escape speed in the event horizon is greater than the speed of light, but no object in the universe can move faster than the speed of light, which means that the black hole can swallow everything that falls into the horizon.

Black holes are not picky eaters at all, whether it is planets, stars, or neutron stars, they are just delicacies in front of black holes. And the black hole with a large weight basically only eats and does not pull, and will only eat more and more fat, and eat more and more fiercely. Only those micro-black holes with low masses evaporate in a short period of time.

For this reason, scientists have divided black holes into different grades according to their weight, namely, miniature black holes:

This is an extremely tiny black hole, also known as a quantum black hole or a mini-black hole, and the lower limit of the mass of this black hole is theoretically Planck's mass (kilograms). Because they are quantum-level black holes, they are very different from ordinary black holes. Although no tiny black holes have been discovered, scientists believe they exist.

Stellar black holes:

This is what we usually call a black hole, with a mass comparable to that of a star. When a star is on the verge of death, the remaining core mass is greater than three times the mass of the Sun, and it collapses into a stellar black hole.

Intermediate-mass black holes:

The mass is generally between 100 and 100,000 times the mass of the sun. According to relevant theories, this kind of black hole is generally the level reached by stellar black holes after eating too much and gaining weight, and it is surprising that scientists have only found a small number of such black holes in the universe so far.

Supermassive black holes:

It is a black hole with a mass of 100,000 times the mass of the sun, and the mass is not capped. This type of black hole is generally located at the center of galaxies and is essential for the formation of galaxies. There is a supermassive black hole at the center of the Milky Way. The black hole in ton 618 is one example of a supermassive black hole.

Black holes are usually the result of the gravitational collapse of celestial bodies, and massive stars become black holes when they die. However, supermassive black holes such as Ton 618 are not formed directly by the collapse of stars, but eventually grow by constantly swallowing other matter and merging with other black holes.

The greater the mass of the black hole, the stronger its gravitational field and the larger the event range radius. The black hole in ton 618 has an event horizon radius of 192 billion kilometers.