"Li Yu, let's just leave?"

This laboratory has no named river system, which has left too many impressions on the laboratory, and the laboratory has also stayed in this river system for a long enough time, and now that he is leaving, Fang Qianmo actually feels a little reluctant. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

"Of course I'm leaving. There is nothing worth studying in this river system, and it's time for us to go to the next one! ”

Of course, Li Yu was satisfied with the laboratory's harvest in this river system, and expressed his expectation for the next expedition to another river system.

The future development of the unnamed river system and the future of the affiliated civilization, Li Yu and they no longer cared. They have been left with enough strength, and if they can't face the ups and downs of the future, then there is no need for them to exist.

However, affiliated to the Six-Ring Federation of Civilizations, Li Yu still left behind the necessary communication equipment.

After all, it's a son, isn't it?

Next, choose which river system, Li Yu and they have a disagreement.

"There are so many river systems, why don't you just pick one? Isn't it a waste of time to analyze and analyze? ”

Xiao Wei listed a lot of river systems and asked Li Yu to pick a target, and then, a disagreement occurred. Originally, Xiao Wei could decide for herself, and she didn't know what she thought, so she decided to let Li Yu choose.

Li Yu pointed out one at random, but Lin Wanbai didn't do it, she felt that with her talent, she would choose a reliable target.

However, Fang Qianmo disagreed.

Originally, exploration is an industry where surprises are discovered by accident, if everyone is like Lin Wanbai, is exploration still called exploration?

So, the two sides are struggling.

In the end, it was Li Yu who made the decision to let Xiao Wei randomly choose a river system and jump over.

Xiao Wei didn't actually choose randomly, she was very interested in one river system, no, in fact, two river systems.

These two river systems are happening in something more common in the universe, a galaxies colliding.

Xiao Wei made a model based on the data from the detection.

As you can see from the model, both are three times the size of the Milky Way, projecting matter at each other under the gravitational pull.

"It's like a pair of glasses!"

Lin Wanbai commented on the model projected by Xiao Wei.

"It's like glasses, it's supposed to be like a human head. Those two bright silver hearts are like eyes, and the flow of matter is like the bridge of the nose. ”

Sun Yixuan's description is closer to the truth.

The location of the laboratory fleet is now at the center of the collision of the two river systems, right in the flow of matter.

I have to say that the location chosen by Xiao Wei happened to see the two river systems spitting on each other, and this description was described by Lin Wanbai.

The collision of galaxies does not mean that two galaxies will collide directly.

In most cases, two galaxies will pass by, and only in rare cases will two galaxies collide directly.

If this happens, the two galaxies will eject a large amount of matter, and the remaining material will form a larger galaxy again.

There is also a case of galaxy collisions, that is, the mass of the center of one river system, that is, the mass of the black hole in the center of the river system, then it will capture another river system and make it its own satellite galaxy.

Next, there are large galaxies, which slowly attract matter from small galaxies.

Between the Milky Way and several of its satellite galaxies, there is such a zone of material exchange.

There's also the case where two galaxies spit a few times at each other and then literally pass by.

It should be emphasized here that the collision of galaxies is an extremely long process, and scientists on Earth believe that the Milky Way will collide with another overlord in the group, the Andromeda Galaxy, in 4 billion years.

With this time, it is estimated that human beings will be extinct several times.

"The phenomenon of galaxy collisions is very helpful for us to study the early days of the universe. In the early days of the universe, galaxies collided much more violently than they do now. ”

Li Yu is still very satisfied with the goal chosen by Xiao Wei.

"Big fish eat small fish?"

Lin Wanbai looked at Li Yu and said this.

Li Yu nodded, indicating that what Lin Wanbai said was not wrong.

According to Li Yu's speculation, in the early days of the universe, star-making movements were relatively frequent, and a large number of stars would be formed every day, and some stars would also die and form black holes.

The strong gravitational pull of black holes will converge into primitive groups of galaxies, and at this time, galaxies collide frequently, and as a result, a large number of river systems begin to appear.

"It seems that we need to stay here for a while, at least to study the collision of these two river systems."

Galactic collisions are common in the universe, but this is on the scale of the universe as a whole, and this phenomenon is less common when it comes to a specific celestial region.

That's why Fang Qianmo said that the lab needs to stay here for a while.

"The flow of matter outside has reached a speed of 5,000 kilometers per hour!" Sun Yixuan found a piece of data and said in surprise.

"That's exactly what happened!" Lin Wanbai first looked at the data detected by Xiao Wei, and then said with admiration.

After speaking, Lin Wanbai's eyes rolled, and he thought of an idea: "Li Yu, let's surf!" ”

Star surfing? That's a good idea, but there are problems.

"Wanbai, you didn't expect that although the speed of matter flow is very fast, their density is very low, and they can't take you at all!"

Fang Qianmo is not wrong, although the material flow is called the material flow, but this is also relative to the universe, to be honest, the density of the material flow is extremely low, within one cubic meter, there can be 100,000 hydrogen atoms, which is considered good.

"It's not that hard! Haven't heard of solar sails? Let's just build a big surfboard! ”

Lin Wanbai didn't give up and put forward an idea.

Solar sails? It's a good idea, but if you want to make a special surfboard that is good enough for surfing, the materials are not to mention the lab, the question is, how big a surfboard do you need to make?

1,000 square kilometers, it shouldn't be too big!

Lin Wanbai is a man of action, and after she had this idea in her mind, she began to make calculations in the laboratory, and then began to build this huge surfboard.

"Hehe, let Wanbai do an experiment, if it's feasible, let's do it again!"

Fang Qianmo completely let Lin Wanbai act as an experimental subject.

When Lin Wanbai was making her surfboard, Xiao Wei made a new discovery.

"Li Yu, I detected a strange galaxy a hundred light years away, which is rushing towards us."

After speaking, Xiao Wei projected the detected situation.

Li Yu took a look at them and found that what Xiao Wei said was not wrong, it was indeed an extremely peculiar galaxy.

With a star racing ahead and three planets chasing behind, the pair pulled an even brighter ribbon of matter in the bright ribbon of matter.

In the material belt, there is no shortage of meteorites, and even the existence of planets, which are torn apart from their place under the gravitational pull of super-mass, but it is still rare for a star system to be torn apart, although this star system is very special.

"On the second planet, there is still life!"

This is yet another discovery.

Instead of revolving around the star, the planet is eating dirt behind the star's butt and getting farther and farther away from the star, and in this case, there is life on the second planet, which cannot but be said, is a miracle.

"Shall we go to that planet?" Fang Qianmo suggested.

"Don't worry, that planet is there, we can't run, and after Xiao Wei establishes an accurate collision model of the two river systems, it's not too late for us to go to that planet."

The collision of galaxies is more important.

"However, we can launch a probe in advance and do an early exploration of that galaxy." Although Li Yu decided to postpone the investigation of the planet, it did not affect the laboratory to send several probes to the planet.

After Li Yu finished speaking, he began to build a collision model with Xiao Weiqi.

Although these two river systems have begun to collide, the distance between them is still very long.

Five thousand light years, that's the distance between two colliding river systems.

But 5,000 light-years is a very short distance for two river systems with a diameter of 350,000 light-years, which is equivalent to two cars on a highway driving one centimeter apart.

This distance, if you are not careful, is the end of the car crash and death.

Fortunately, according to Xiao Wei's calculations, the two river systems will pass in opposite directions at this distance, that is, they don't have to collide head-on.

In fact, the probability of a head-on collision between galaxies is very small.

If you imagine it, you can know that the four fundamental forces, in addition to gravity, there are other forces. When two celestial bodies are close enough, the distorted space-time will also produce a repulsive force that prevents the two celestial bodies from approaching.

This phenomenon, in the microscopic world, is more obvious, the nuclei of the atoms are positively charged, so they will keep a certain distance.

However, applying a strong enough force can bring two atoms close enough to collide, which is much more powerful than a neutron bombardment.

The fusion reaction is also a manifestation of this phenomenon.

The occurrence of a head-on collision phenomenon means that the repulsive force between the two celestial bodies can no longer resist the gravitational force, so they have only one way to collide.

When Li Yu was researching with Xiao Yi without distraction, Lin Wanbai's surfboard had already been built, and when he inadvertently glanced out, he found that there was a huge artificial creation outside the space.

This is a surfboard that is a thousand kilometers long and a hundred kilometers wide.

It's not that Li Yu can't think of a more accurate adjective, but he can't imagine how Lin Wanbai, who is less than 1.6 meters tall, should surf on this surfboard, which is definitely a behemoth to her?

However, Li Yu obviously underestimated Lin Wanbai's brain hole.