Bright Sword starts with the grenade flat.

Chapter 484 Black Hole Density Exploration Source
As for the use of this micro black hole, it is naturally to form a space jump and prepare for the critical value formed in the subspace.

Of course, as Wandering Blue Star conducted more in-depth research on the black hole on the unmanned spacecraft of the Cosmic Alliance, it was discovered that the Cosmic Alliance was indeed very capable in the study of gravity.

In particular, we have unique insights in the creation of high-intensity gravitational waves. Of course, these are now all wandering blue planets.

As for the investigation by the Cosmic Alliance, I'm really sorry, it cannot be investigated at all. If random space jumps were really that easy to investigate, there wouldn't be so many interstellar pirates in the Cosmic Alliance.

Of course, regardless of whether the case is pursued or not, the Science Academy of Wandering Blue Star on Liu Xiu's side is still continuing its research on artificial black holes in unmanned spacecraft.

I am particularly curious about the gravity furnace that can create artificial black holes.

As the research deepened, physicists from the Academy of Sciences on the Wandering Blue Planet discovered a more serious problem, which is that this artificial gravity furnace is powered by an external antimatter annihilation reactor.

Use the energy generated by the antimatter annihilation reactor, and then supply this high energy to the gravity furnace, and then create a high gravity area inside the gravity furnace.

Then, by adding matter, a black hole can be formed. The effect of a black hole can be achieved without a large amount of matter.

The reason why the Cosmic Alliance wants to create a black hole is actually to be able to enter the subspace in another way besides space jumping and thus achieve space jumping.

Because the high-intensity gravity generated by the black hole is a critical value, and this critical value is the gravitational critical value that breaks the boundary between normal space and subspace.

You should know that the space jumping method used by the Cosmic Alliance is actually a technology passed down from prehistoric civilization. This technology is different from the method used by black holes to open subspace. It has certain limitations and cannot travel in subspace for a long time.

Of course, in the eyes of Liu Xiu or the scientists on the Wandering Blue Star, exploring how to travel in the subspace is not the key. The key now is to explore the origin of matter after getting close to the black hole.

A deeper understanding of the nature of matter is the most important thing. After all, black holes, as the celestial body with the highest known matter density, are very helpful in exploring the origin of matter.

You know, any substance has a density. High-density substances are hard and heavier per unit volume, while low-density substances are soft and lighter per unit volume.

All matter has density, such as bricks and tiles, grass and trees, and celestial bodies in the universe are no exception. Gas planets like Jupiter, although huge, have very low density.

Stars like the sun usually have extremely high density. High density means high mass, and high mass means strong gravity. That is why all the celestial bodies in the solar system, large and small, can operate in an orderly manner under the influence of the sun's gravity.

However, stars are not the densest celestial bodies in the universe. If we rank them, there are three densest celestial bodies in the universe.

The third one is neutron star. What is a neutron star? Matter is composed of atoms. When the electrons in atoms are compressed into protons due to some powerful force, they become neutrons. It can be seen that the density inside neutrons is very high, and neutron stars are just a huge atomic nucleus composed of a large number of neutrons, and its density is even higher than the density of the atomic nucleus itself.

You should know that the density of an atom and the density of its nucleus are two different things, because there are many electrons rotating around the nucleus, just like a star system.

The diameter of a general atom is approximately between 0.1 and 0.5 nanometers, but the diameter of the nucleus is 10,000 to 100,000 times smaller than the diameter of an atom.

If an atom is enlarged to the size of a football field, then the nucleus would be a ping-pong ball on the field, not a football.

Such a high density naturally corresponds to an extremely high unit mass. As far as we know, the mass of the lowest density neutron star can reach 80 million tons per cubic centimeter, and the mass of the highest density neutron star can even reach about 2 billion tons per cubic centimeter. High mass corresponds to strong gravity. Therefore, neutron stars also have extremely high rotation speeds.

For example, before a wandering blue star escapes the solar system, it takes about 24 hours to rotate once, which is what we call a day and night, while a neutron star can rotate dozens, hundreds, or even thousands of times in one second. Although the rotation speed is fast, it is not chaotic at all. Among many celestial bodies, the rotation of a neutron star can be said to be quite stable.

It is precisely because neutron stars have extremely high rotation speeds that they can be found in the vast universe. Because at high rotation speeds, the powerful electromagnetic waves radiated by the two poles of neutron stars will periodically sweep the universe, and when they pass by wandering blue stars, they can be detected.

How are neutron stars formed? In fact, the predecessor of neutron stars is stars.

At the end of a star's life, due to the weakening of nuclear fusion reactions, the strong gravitational force of the star's inner core will cause the star's outer matter to collapse inward. The rapid collapse of the outer matter will cause the star's inner core to suffer a strong impact. Under the huge gravitational force, the atoms in the star's inner core begin to be compressed into neutrons. Eventually, a neutron star is formed in the middle of the star.

The neutron star, which ranks third in density, is already so powerful, so who will be ranked second? The second place is the quark star.

Of course, this name is unfamiliar to most people. To put it simply, neutrons are formed by the compression of atoms, and quarks are formed by the further compression of neutrons. In other words, quarks are denser than neutrons, so quark stars are naturally denser than neutron stars.

If a neutron star is a giant atomic nucleus, then a quark star is a giant neutron. So a high-density quark star naturally has a more exaggerated appearance. Although the density of a quark star is extremely high, it is still within the scope of our understanding.

By understanding the microscopic world, we can know that matter in this world is basically composed of atoms. Different atoms are combined together to form molecules, and chemistry is the continuous experimentation of the properties of various molecular materials composed of various atoms.

An atom is composed of a nucleus and some outer electrons. The nucleus is composed of neutrons and some protons. When the electrons outside the nucleus are pressed into the protons, the protons in the nucleus become neutrons, and a neutron star is born.

Of course, neutrons are made up of quarks, so when neutrons continue to be crushed by strong gravity, they naturally become quark stars. This is just like the atoms were crushed by gravity into neutrons to form neutron stars.

Of course, there is actually a fourth star after the neutron star, which ranks third in density. The fourth is the white dwarf. Of course, as the fourth in density, although the atoms of the white dwarf have not been crushed into neutrons by gravity, the actual situation is not much better.

(End of this chapter)