Voyage of the Stars

Listening to the description of the rhombus crystal, everyone unconsciously felt a sense of the vastness of the galaxy, the insignificance of themselves, the eternity of the universe, and the brevity of life.

Everyone listened quietly to its story.

"Perhaps it is difficult to understand intuitively for life forms like you who have not yet reached the sixth level of civilization. How should I put it?" The diamond-shaped crystal paused for a moment, and its crystal-like body seemed to feel a little warm. After the change, it continued, "Hey! Dark matter halo! I take back what I said before. It seems that your human civilization knows nothing about dark matter. At least some of your conjectures about dark matter are very good."

"Dark matter halo?" Yue Yuan asked doubtfully. He knew what a dark matter halo was, but he didn't know what the difficulty of the Great Voyage mentioned by the rhombus crystal had to do with the dark matter halo.

The rhombus crystal did not directly answer Yue Yuan's question. It seemed to have seen something surprising, and said in a rather surprised tone: "Hey, the dark matter halo density profile is the classic NFW distribution, the universe-scale density formula. Quantitative description of the dark matter halo. The aggregation degree formula, as well as the expression of the dark matter halo mass function of the random field, the dark matter halo mass growth and assembly history, the dark matter halo bias factor, and the dark matter subhalo mass distribution description function."

"Tsk tsk. You are so interesting! Although many of them are nonsense, I have to say that you are really interesting. You must know that at your level, our civilization did not even come up with the concept of dark matter. You But it broke out in an era.”

Dark matter halo.

In human scientific literature, they are the basic building blocks in the large-scale structure of the universe. Dark matter haloes are generally located on the fiber-like large-scale structure of the universe or on its nodes, and some are also located in low-density void areas.

The galaxies observed by humans are often formed in dark matter haloes with these fiber structures. Most galaxies are embedded in dark matter haloes. The dynamics of galaxy systems like the Milky Way are mainly dominated by the distribution of dark matter.

Until now, humans have still not been able to determine the nature of dark matter in the galactic halo, but there are some candidates in some theories related to the universe model, such as supersymmetric particles, axions and the like.

Of course, all the relevant theories are nonsense in the eyes of rhombus crystals, but the scientists here can also hear that rhomboid crystals also affirm and appreciate this.

"Since you have these foundations, you guys can understand without me having to say anything more." As if realizing that everyone understood what he meant, the voice of the rhombus crystal appeared again.

"You mean there are river systems and dark matter islands?" an astronomer calmed down.

"Look, don't you understand?" The rhombus crystal seemed to be pleased and let out an anthropomorphic laugh.

Then its body burst out with a burst of light, frightening the scientists who were immersed in thinking, thinking that something had happened to the rhombus crystal.

But they never thought that the burst of light did not turn into a laser and shoot out, but was scattered like stars among the rhombus crystals and everyone, as if countless cold fluorescent spots were floating together. Then everyone saw these stars disappear and be replaced by It is a screen dominated by blue tones.

Or it would be more accurate to say that it is a 3D holographic screen.

"Holographic technology!" Zhao Youqin, a communications and information scientist, couldn't help but exclaimed when he saw the holographic screen.

Human beings have reached the third level of civilization, and they still use projection screens. There is no holographic technology like this that looks real and can be grasped with hands. Now that he saw it, how could he not be excited.

After the holographic screen appeared, everyone discovered that a dynamic diagram of the river system appeared in the holographic screen.

Yue Yuan also raised his eyes and stared. He found that this was a rotating dynamic image of the Milky Way, and it was obviously accelerated. He was also surprised by the holographic screen, but he knew that the rhombus crystal was not created so that everyone could see the holographic screen, but to see the content inside.

He found that this dynamic picture was very familiar. It should have been copied by Rhomboid Crystal from the human database for his group to see.

"Are we really living in dark matter?" A scientist asked blankly while looking at this dynamic picture of the rotating Milky Way on the holographic screen.

Humans have long discovered anomalies in the high-speed rotation of the Milky Way. Astronomers have discovered that stars on the edge of the Milky Way rotate much faster than expected.

According to Newtonian classical mechanics, it stands to reason that the orbiting speed of a celestial body should decrease as its distance from the center increases. This is because objects that are further away experience less gravity from the center and should have lower orbital speeds.

However, astronomers have discovered through observations of stars on the edge of the Milky Way that the orbiting speeds of these stars have not dropped significantly, but are similar to, and in some cases almost the same as, stars near the center of the Milky Way. This undoubtedly goes against the expectations of traditional physics, which begs the question: What enables the Milky Way to rotate so quickly and uniformly?

Since the traditional theory of gravity cannot explain it, human scientists introduced dark matter after a long period of research. It is believed that in addition to visible stars, gas, and dust, the Milky Way must also contain a large amount of unknown mass, which provides additional gravity for the rotation of the Milky Way.

The reason why the Milky Way does not fall apart during its rotation is because the gravitational force provided by these dark matter sticks the entire galaxy together.

In the Earth era, some scientists believed that galaxies like the Milky Way were shrouded in a huge fog of dark matter.

Later, astronomers made similar observations of the Andromeda Galaxy, and the results showed that the stars at the edge of the Andromeda Galaxy also orbited at a speed higher than expected based on calculations based on visible matter.

This shows that high-speed rotation is not a unique phenomenon to the Milky Way, but a universal phenomenon. This is true for the Andromeda Galaxy and other distant galaxies. It is a common feature of many galaxies in the universe and is a universal cosmic phenomenon.

So obviously, the reason why the rhombus crystal shows this picture to everyone here is just to tell humans that your conjecture is right. The reason why the Milky Way rotates like this is because there is a large amount of dark matter.

So what does this have to do with the great difficulty of the Great Voyage?

The answer is simple, dark matter provides gravity, and what is the strongest source of gravity in the Milky Way? It's the great black hole at the center of the Milky Way.

In other words, the bright and dark matter of the Milky Way has its appearance together, and because of the gravitational effect, the dark matter is concentrated in each river system, and the farther away from the river system, the thinner it becomes.

The iconic technology of level 6 civilization is the technology tree related to dark matter. If the level 6 civilization leaves the galaxy, it will be like a low-level civilization that leaves stars, planets and other materials to provide resources and energy. Ways to replenish energy in the area.

By that time, it will really perish on the waterway.

You must know that the navigation technology of level six civilization is warp navigation.

Although humans have not mastered warp speed navigation, they do know something after their last contact with the Awakener. Warp speed navigation is different from conventional navigation in that it has a constant speed of inertia. It must have a steady supply of energy to continue.

No wonder the rhombus crystal says that it doesn’t know how far or where the pioneer civilization can go.

Everyone who wanted to understand was silent, and a feeling of despair emerged spontaneously in the face of the vastness of the universe. Their hearts suddenly felt extremely depressed, and the deep space claustrophobia that had not appeared for a long time reappeared.

When I stared at the bright stars again, the uncanny valley effect suddenly appeared. It felt like the stars had lost their color and became extremely lonely. Behind the stars was like a dark abyss, an abyss that swallowed all life.

This endless sea of ​​stars and vast universe is truly so vast that it is suffocating and hopeless!

At this moment, everyone felt a chill. They all deeply felt the malice of the universe. It was the malice of the vast and infinite scale of the universe itself towards life.