There are 65438+ billion black holes hidden in the Milky Way? If they enter the solar system, will the earth be swallowed up?

As we all know, a black hole is a special celestial body in the universe. Most people have a terrible impression of it because of its powerful destructive power. No matter what it is, as long as it is close to it, it will be captured and swallowed, even light is no exception. Have you ever wondered what would happen if you put a black hole into the solar system?

In fact, at that time, the earth will be split into atoms immediately by it. What if this black hole is only 1mm in size? In fact, as early as 2008, physicists were worried about this problem. At that time, the large hadron collider newly built in Europe began to operate, and many people thought that it might create many miniature black holes.

But in fact, until now, the Large Hadron Collider has been running smoothly for many years without any dangerous accidents. Theoretically, a celestial body 2.44 times the mass of the sun must explode to produce a big black hole. But the energy required to make a miniature black hole is five times that of10/kloc-0. Obviously, our technology is not up to that level. Even if we create a miniature black hole, its life will not be long. Because according to Hawking's black hole evaporation theory, this mini black hole is likely to disappear immediately.

But what is black hole evaporation? This can be explained in two directions. On the one hand, the temperature of a black hole is only 10 minus 17 Kelvin, while the temperature of the universe is about 2.7 Kelvin, which is much higher, so the black hole will slowly absorb the heat from the outside. And according to the explanation of thermodynamic instability, its specific heat is negative. So the higher the temperature of a black hole, the smaller its mass.

On the other hand, black holes are constantly radiating particles, and quantum fluctuations will occur near its world, which will produce some virtual particles. If one of them falls into a black hole, the other virtual particle will not disappear, but will become a real particle. But according to the principle of conservation of energy, a black hole must spit out a particle to balance the energy loss of the universe.

So we will see that the black hole is spitting out particles, and its mass will continue to decrease. So even if a black hole is created, it won't exist for long. In fact, there are already millions of mini black holes around the earth. Their mass may reach 100 tons, but their size will not exceed one atom. Because they are too small, their world scope is too small to swallow some molecules that are too big.

However, if a miniature black hole has a diameter of one millimeter, its mass will be greater than the sum of the masses of the five moons, which is about 1 1% of the mass of the earth. If it appears on the surface of the earth, the huge gravity of the black hole will always affect 2 124 kilometers away, and even the overall gravity of the earth will increase obviously, and the moon will be pulled away from its original orbit. After moving along an ellipse, the black hole and the earth attract each other, and it will devour the surface and move toward the center of the earth. It only takes about 42 minutes to cross the earth.

After that, the black hole will revolve around the earth at a speed of 12 km per second, devouring the earth layer by layer. Moreover, under the action of its huge gravitational tide, the earth will slowly decompose, and the debris generated will surround the black hole, forming an accretion disk with a temperature of 6000 Calvin, which will radiate energy outward.

So at this time, the black hole looks like a luminous ring, and it will take 50 years to completely devour the earth. At the same time, the decomposition of the earth will produce a large number of asteroids, which will lead to the continuous collision of planets in the solar system in the next million years, but don't worry too much. We haven't found a black hole that can threaten the earth yet, and we are still very safe.

And black holes are very important and common celestial bodies in the universe. In fact, the center of our galaxy is a huge black hole around which tens of millions of stars revolve. But we know very little about it. What's it like inside a black hole? Is it a starting point, a wormhole or another brand-new universe? Its mystery will always arouse our infinite reverie and let countless people advance wave after wave to explore the truth of black holes.