Black holes can intermarry.

Now, what enters the black hole is stellar dust, gas, light, spaceships with robot astronauts, and garbage to be converted into energy. In any case, trapped matter only increases the mass of the black hole itself, and at the same time expands its radius and surface. If the mass doubled, the radius doubled, and the area of the horizon increased by four times. Will it continue to grow forever? Hocking first made a categorical answer: since it is proved that the black hole will not shrink again, it will continue to increase indefinitely. As it is continuous, the increase is gradual. But there is a special case, that is, two black holes may be in contact with each other and collide. In the process of attracting each other, a black hole enters another black hole. The two black holes become a single black hole, and all the components of the two black holes are preserved. The larger single black hole may collide with another black hole, and so on, thus producing a black hole of mass and volume. It is believed that in the process of collision, about 1/1000 of the black hole's static energy is released, and it is emitted to the cosmos in the form of gravitational waves. Like speed and light, its area is expanding and the entropy of the black hole increases. In other words, the internal chaos is growing, that is, information about inhaled substances can not be used or remedied, as if a computer accidentally messed up the letters of a newly written article. So there are only three messages that can be described in black holes: mass, angular momentum (the rotation of black holes) and charge. Wheeler compared this information to bald head with only three hair. We could not understand what the material was in. Based on these three kinds of information, we can classify black holes: the Schwarzschild black hole with no angular momentum and no charge. It has the characteristics of "singularity" and "Horizon"; the Kerr black hole with angular momentum but no charge; and the black hole with angular momentum and charge. It can also be distinguished from the origin of black holes. But the latest classification is based on "color".It seems a bit ridiculous. How can a black hole without a beam of light be colored? In fact, the colors mentioned here are not the colors of the usual red, blue, green, and so on, but are used to distinguish the different colors of quarks. Quarks are smaller elementary particles that make up protons and neutrons. For our sky physicists, the pursuit of different colors of black holes in the process of tracking infinitesimal to infinity and from infinity to infinity begins.

Black holes are colored.

Scientists have always thought that it is impossible to understand the nature of matter that is absorbed by a black hole, but the latest theories hold that black holes can provide information in that way, because black holes emit particles like gluons. Gluon is the transmitter of quark binding and quark is the basic particle of matter. Because quarks and gluons are distinguished according to "color", the same way can be used to partition black holes according to the type of gluons they discharge. This graph represents a series of gluons (colored pellets) discharged from a black hole.