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Dongfang Panshi, Zhang Heng Astronomical Observation Room.

Here, more than a thousand experts are responsible for observing astronomical data from space all year round. "A master's degree is not as good as a dog, and a doctorate walks everywhere" describes this observatory. Since the minimum degree is also a master's degree, the phenomenon of involution is extremely serious.

It has the most complete astronomical observation equipment here, and the pressure on the workers is actually quite high. Whether it is searching for matter or cosmic strings, these two heavy tasks are on their shoulders.

As for the rest of the observatories, they are all small fish and small shrimps, and they are more meant to train young people.

Of course, young people are mostly optimistic, and in their spare time, they also discuss the latest movies.

"The Sibadi are actually oviparous, what a miraculous species."

"Some experts believe that their clan training method is better than our current family training method. The family is a natural private system. The marriage rate of young people is not high now, and the family system is more likely to be eliminated in the future."

"It makes you look like a young man."

"Well, actually, I don't want to have children either. Now that robot technology is getting more and more developed, everything for the elderly can be done by robots."

As long as it doesn't affect the normal work, it's okay to discuss a few words, but it is obvious that these young people are a little restrained and talk about the mountains. After all, compared with the rich life inside, the work on the Eastern Panshi is still a little bit boring.

A middle-aged professor growled: "Okay, okay, the 64th gravitational wave detection is about to start."

"Please do a good job of data collection and don't waste the internship opportunity. Hope we can find something."

The gravitational wave telescope is a complex "big toy", and every different parameter can see different "things", and even faintly discover other dimensions.

Like the LHC, there are many details hidden in the endless data.

To search for cosmic strings requires long-term groping, experimenting, probing, and calculating.

"This ghostly place really has no matter at all, and the nearest star is 15 light-years away, and it will take us 9,000 years to go there." A doctoral student scratched his scalp, "Whether it collapsed or not, we don't know. No way of knowing."

The faces of the other people in the observation group were also not very good.

Yes, more than a thousand of them have been searching for a whole year, but they still haven't found any substance!

It's not surprising when you think about it carefully, most of the matter in space is in constant motion, and now the massive stars are disappearing one after another, without the constraint of gravity, the asteroids are naturally going to fly separately in the face of catastrophe.

And the gravitational wave telescope also has its own limit, things with too small mass have pitifully weak gravitational force and cannot be seen at all.

On the contrary, the gravitational data of each star can be seen clearly, and even the planets revolving around the stars can be distinguished.

But the significance is not too great, because that is "past" data.

The transmission speed of the gravitational wave is also the speed of light, which is the same as the transmission speed of the photon. I saw a planet revolving around a star, but it was tens of thousands of years ago, and now, they are probably dead...

"Everyone, don't be too frustrated if you can't find matter. Let us find a way to complete the next important goal, the search for cosmic strings."

Professor Huo Dong of the Gaowei Laboratory spoke in his usual loud voice, beaming, as if he had discovered something new.

Next to him is a newly recruited doctoral student, a young man named Xia Yu.

"We all know that it is not easy to find cosmic strings. Its gravitational fluctuations are different from those of stars and neutron stars, and the parameters that need to be adjusted are also different."

"Next, we invite Dr. Xia to present his thesis on stage."

Xia Yu is a 20-year-old young man. He looked a little shy in front of so many people, and he blushed a little when he spoke: "My idea is to use the distribution of galaxies in the Laniakea supercluster to find cosmic strings."

"Instead of identifying cosmic strings as a kind of matter, it is better to say that it is a very unique space-time structure. The vibration of cosmic strings when the universe was born produced extremely high gravitational forces, forming the supercluster of galaxies we know well. "

"But as the oscillations slowly disappear, this part of the gravitational force also decreases... According to the Laniakea supercluster of galaxies, we can infer the tension distribution of the cosmic strings."

The cosmic megastructure, the Laniakea supercluster, contains about 100,000 galaxies and spans 500 million light-years, and even the Virgo supercluster is only a part of it.

The center of the Laniakea supercluster of galaxies is about 200 million light-years away from the earth. There is a super-strong gravitational source here. Scientists named it the "Giant Attractor". Almost all 100,000 galaxies surround this center rotate.

As for what the "giant attractor" is, there is no reasonable explanation at all, and people don't even know whether it is a black hole or not.

In addition, the distribution of 100,000 galaxies is like hair, stretching very long one by one, which is very incredible.

"Cosmic strings are a possibility to explain the Laniakea supercluster of galaxies, including the formation of the Milky Way, which essentially has the help of cosmic strings. For specific formulas, please refer to pages 19 and 21 of the paper..."

"In addition, cosmic strings also have the function of stabilizing the space of the universe. The reason why our region did not collapse together with the Milky Way, we have reason to suspect that there is a long-distance cosmic string nearby, stabilizing the surrounding space structure .”

Dr. Xia Yu finally asserted: "According to the newly developed delta-four-dimensional formula, and according to the detection of the gravitational wave telescope, this cosmic string may be 500,000 kilometers away!"

A distance of 500,000 kilometers is almost the same as a step away on a cosmic scale.

Dr. Xia Yu's inference soon aroused more arguments from expert groups.

After the approval of the government, the engine of Dongfang Panshi restarted and headed for the destination.

The maximum speed of Dongfang Panshi is 500 kilometers per second, and it takes less than half an hour to reach it.

Next, the scientists began their search with great interest.

They activated the gravitational wave telescope very quickly and adjusted it to a certain suitable parameter.

As an unsolved mystery, cosmic strings cannot be seen or touched. As a hidden extra time and space, even if it collides with people, there will be no reaction. Human beings will pass through it directly, but they have no way of realizing that they have just penetrated the cosmic string.

Just like neutrinos, countless neutrinos penetrate the human body every second, but there is no response.

Of course, since the cosmic strings are still slightly oscillating and generating gravitational force, it is possible to be detected.

After a month of astronomical observations and data analysis, more than a thousand cosmologists headed by Professor Huo Dong can finally announce that human beings... have found cosmic strings!

Immediately afterwards, the High-Dimensional Universe Laboratory released a very important scientific research report.

...

Zhang Ran was in the conference room, listening to the related report in a daze.

Unable to find any usable substances, his mood is actually not very good, which means that creation energy must be consumed to supplement these lacking resources...

It's not a wonderful thing to watch your pockets shrink, even if human beings are indeed developing at a high speed.

At any rate, the cosmic strings have been found, and a small goal has been completed.

But listening to it, he became a little confused. Because he doesn't understand what these astronomers are doing, what twists and turns they encountered, and what the theory is like, he doesn't want to know at all, and he can't understand it.

So when these people were talking endlessly, he had to interrupt Lao Huo, who was constantly expressing his emotions and sighing loudly that "the truth of the universe is extremely beautiful".

"Professor Huo, I have a question. What's the meaning? Since the cosmic strings can't be seen or touched, and our technological strength can't cut it, what's the meaning? Didn't you say that it has something to do with the big rip in the universe? And other advanced Does civilization matter?"

Zhang Ran said dissatisfiedly: "There must be some practical significance there, right? We can't say that we have found a cosmic string, so we can declare a great victory, right?"

"Now you say that the cosmic strings are right in front of us, and I can't see or touch them. What's the point?"

"Your Highness, it's like this...you listen to my explanation." Now that the lord had spoken, Huo Dong immediately put away the long speech and resumed his seriousness: "According to our current research, there are probably two kinds of cosmic strings."

"The first is linear. It can span hundreds of millions of light years, or even billions of light years. It is equivalent to the spine of the universe, supporting the entire structure of the universe!"

"There is another kind, ring-shaped, which is equivalent to circles. The big ones are so big that they can surround the entire solar system. The small ones may only be the size of a fist, or even the size of a marble. We don't know yet why there are Looped cosmic strings, but they do exist, and they're not rare."

"On the other hand, cosmic strings do support the structure of space. At the moment when the universe is torn apart, the linear strings are likely to break directly. But the ring-shaped strings may protect a part of the space, allowing its interior to Undamaged."

"So you mean..." Lin Qiuyue, who was sitting next to Zhang Ran, had more professional knowledge, and she immediately thought of something.

"The small universe...is the small universe produced by ring-shaped strings?"

"That's right!" Professor Huo nodded and clapped his hands vigorously: "If we have the ability to cause the vacuum decay in a part of the area, the ring-shaped strings may wrap the cosmic membrane and create a small universe. This is what we get First conclusion!"

Zhang Ran stayed for a few seconds, and then, a lively discussion broke out in the lecture hall.

This news is so shocking!