How did black holes come about, and how big are the largest black holes in the universe?

After a sufficiently large star**, because its density is too large, the repulsion between the molecules cannot resist its own gravitational effect, and it keeps getting closer, and as a result, the density becomes larger and larger, until it is irreversible, and the whole star shrinks into a single point, called a singularity, which is a black hole. The superficial meaning of a black hole is that it is a composition of sufficient density so that light cannot escape the gravitational pull generated by this composition, so light can only enter but cannot exit, which is called a black hole.

The mass of the ton618 black hole is 66 billion times that of the sun, and it is considered to be the largest single celestial body in the universe, comparable to 1 23 times the total mass of the Milky Way, more than 15,500 times the mass of medium-sized black holes in the Milky Way, and larger than the mass of many small galaxies, for example, it is a mass of the Milky Way's close neighbor of the Great Magellanic Galaxy, which is equivalent to more than 100,000 times the mass of the smallest known galaxy, Segret 2, and its strong gravitational pull allows it to swallow the mass equivalent of 91 Earth's masses every day.

Astronomers have estimated the massive mass of Ton 618 from the correlation of hydrogen rays, which is 10.4 billion light-years away, but it can still be seen brightly in astronomical telescopes, and it was discovered in the 60s of the last century. It is estimated that Ton618 has a diameter of 400 billion kilometers, which is much larger than the largest star, Stephenson 2-18, and millions of times larger than the post-lead hailist.

How black holes are formed.

The black hole consists of a scalar polynomial constructed from the Riemann curvature tensor in the center of the singularity that diverges here and the surrounding space-time, and its boundary is a one-way membrane that only enters but does not exit: the event horizon, and Huai Jianfan is not visible within the range of the event horizon. According to Einstein's theory of general relativity, when a dying star collapses, it will collapse toward the center, where it will become a black hole, swallowing up all light and any matter in the adjacent universe.

The creation of a black hole is similar to that of a neutron star: a star is preparing to be destroyed, and its core is rapidly shrinking and collapsing under the force of its own gravity. When all the matter in the core is turned 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.