After separating from Xiang Zidan, Xu Yunzhi returned to the Academy of Sciences, and she blamed herself very much.

People are always like this, wherever they go. In previous years, she had been paying attention to the celestial phenomena and had never relaxed. But in the past two years, she has indeed been negligent. Perhaps, it should not be said that it was negligence, but that it was deliberately avoided.

She's a scientist, and she's a very good scientist. However, scientists are also human beings and have the weaknesses of ordinary people.

She has always had hope that the catastrophe could be eliminated. Since the Jones people believed that sending Shu Yunpeng away would change the characteristics of time and space, she admitted that the technological level of the Jones people was much higher than that of the earthlings, so she naturally had this expectation.

But, in the end, she was disappointed. According to Jones's calculations, the appearance of the Heavenly Tribulation appeared in the fourth year after Shu Yunpeng crossed over, so if he was sent back four years later, would there be any changes?

Four years later, she was very focused. During that time, she watched the telescope almost day and night, hoping to see changes, but she didn't.

In the eighth year, she waited day and night again, and there was still no change.

She was disappointed, and many of her companions advised her to stop caring about it. The Jones people are also grasping at life-saving straws, and if they are not accurate, don't take it seriously. She sighed and decided to give up. Facing a billion stars of all sizes is like facing the flames of hell, and that is not a beautiful sight. She turned off the telescope and never turned it on again.

Who would have thought that the Jones people had been gone for almost ten years, and the characteristics of time and space had changed unconsciously. If you hadn't gone to the Eternal Land and suddenly found that it wasn't so hot outside, and there was actually grass sprouting, I don't know when I would have found out!

With the sword of Damocles hanging over their heads as a whole will be extinct in 200 years, scientists have also become slack. Anyway, no matter how hard you try, you can't catch up with the Jones and build a spacestar like them, so is it necessary to devote yourself to research? It's better to live every day, isn't it?

In such a situation, Xu Yunzhi couldn't ask them anymore, after all, scientists are also human. You can't expect a person to be like Shinto, calm and indifferent to the fire of hell. Besides, she herself has the idea of living a day at a time, and she can't keep up her spirits, can she still ask others?

Now, she suddenly found that she was really useless, and she was a little unprepared for the new situation.

She hurried into the laboratory and found that a thin layer of ash had accumulated on the countertop of the laboratory. I quickly took a rag and a basin, fetched water and began to clean up the laboratory.

She was wiping the table top and countertop, and Liang Jingjing appeared at the door of the laboratory. Liang Jingjing saw that she was doing hygiene, and smiled: "Sister Yunzhi, let's do it again tomorrow, let everyone do it together." ”

"I'll just finish this one," Xu Yunzhi replied, "I'll do it tomorrow in other places...... Hehe! Excuse me

I really feel like I've woken up from a dream all of a sudden! ”

Liang Jingjing smiled at her self-deprecation and didn't say anything. Xu Yunzhi suddenly thought that the only one in the entire Academy of Sciences who did not let himself go was Liang Jingjing. Liang Jingjing was originally just a science enthusiast at most, but now she is doing a lot of things.

"It's still you, never gave up!" She said to Liang Jingjing from the bottom of her heart.

"I have a thin foundation, so I can only work hard!" Liang Jingjing expressed modesty: "Sister Yunzhi, go to me!" ”

"To you? Do you have something? ”

"It's okay! I've got a bottle of wine, please drink! Liang Jingjing said: "We celebrate the disappearance of the Heavenly Tribulation!" ”

"Okay! I'm coming! Xu Yunzhi readily agreed. She had to admire, Shu Yunpeng really has a way of looking at people, he said that Liang Jingjing is a material engaged in scientific research, sure enough. When everyone else has given up, she can have no distractions, what to do, it's really not something ordinary people can do.

Her affection for Liang Jingjing spontaneously emerged.

"Huh!" When she arrived at Liang Jingjing's room, she saw that there was not only wine in her room, but also a lot of food, Xu Yunzhi smiled: "You are really good, you got so much food, where did you steal it?" ”

The dungeon is a supply system, as long as it's meal time, you go to the restaurant and you will get a piece of food, which is enough for you. But generally not taken out of the restaurant to avoid waste. There are no shops in the dungeons, and there really isn't a need for them, so it's impossible to find something to eat elsewhere.

"I told the head of the restaurant that I was going to ask the governor to drink, and she gave me this!" Liang Jingjing said with a smile: "I am a fox fake tiger and got it in your name." ”

Xu Yunzhi smiled, and the two began to drink. After three rounds of drinking, the two began to get excited and talked about the strange things in the universe. The main thing, of course, is about the Canis Major dwarf galaxy. Dwarf galaxies with billions of large and small stars, although they are only satellite galaxies of the Milky Way, how can they move and stop?

"I don't understand!" Taking advantage of the wine, Xu Yunzhi sighed with emotion: "I have been engaged in astronomy for so many years, to be honest, I am getting more and more confused. The mysteries of the universe, we think we know something, but the results are always unexpected! ”

"I don't think there's anything strange about this," Liang Jingjing said, "The Jones people's hundreds of millions of years of civilization, they can't understand it, they can only guess, let alone us." ”

"Guessing also requires skills!" Xu Yunzhi said: "This time, they guessed correctly again. But the funny thing is that they thought they had guessed wrong, so they couldn't hold back and ran first! ”

"That's why I said they were guessing too!" Liang Jingjing smiled: "They guessed something, but they couldn't hold on...... Of course, it's normal to not be able to hold on, because there are too many uncertainties. They have been wandering in the stars for so many years, and they must have encountered a lot of things, and they must have suffered countless hardships in the universe. Once bitten by a snake, ten years afraid of the well rope, has been like a frightened bird. ”

"That's right, they must be trembling in the face of the universe, not like us earthlings. We know too little about the universe, and our arrogance makes us self-righteous. If we had the same experience as them, I am afraid that they would not even have the slightest calm. ”

"But they have been here, and it is very helpful to correct our arrogance," Liang Jingjing said...... "Professor Xu, there is one thing I always don't understand, the Jones people have been running and jogging, going forward and running, spending tens of millions of years, running 500 light years, and actually not encountering a single intelligent life. There should be many planets in the universe that are suitable for life, but there seem to be very few intelligent life in the end, why is that? ”

"Such a big question, you ask me, who do I ask?" Xu Yunzhi smiled: "Maybe you have to ask the universe, but the universe is not a conscious existence, if there is an anthropomorphic explanation, it can only be said that it doesn't know itself!" ”

"So, we're very lone......ly," Liang Jingjing pondered, "I saw in the information that there is a theory called the 'big filter' theory, what do you think?" ”

"I don't think so!" Xu Yunzhi smiled: "It is still a product of human self-righteousness!" ”

"Why do you say that?"

"First of all, we must remember that the universe is an unconscious material being, and then we can discuss issues on this basis!" Xu Yunzhi said: "The so-called big filter first gives the universe the illusion that it seems to be conscious. This illusion is subjectively given by us, and it is impossible to prove that it actually exists. What qualifications do humans have to determine that there is a large filter for life in the universe? ”

"You mean, the idea of the Great Filter, which is only given by humans themselves, does not actually exist?"

"That's what it means!" Xu Yunzhi said: "I remember Jones Lulu said that everything in the universe is simpler and more stable. That is, the structure of organic life is too complex to be easily broken up, returned to nature, and turned into elementary particles. If there really is any 'big filter', it is actually the complexity of the living body itself! This complexity leads to the fragility of lifeforms, and any movement in the universe has the potential to destroy this complexity and bring it back to simplicity! ”

Liang Jingjing was speechless for a while. Jones Lulu used their metal building blocks to build the building blocks, and then knocked it down to explain the simpler and more stable matter in the universe, which Liang Jingjing also remembers vividly.

"There's a little bit of truth to what you're saying...... Liang Jingjing pondered for a long time before saying, "This reminds me of Commander Claire!" Just because the helmet was broken for a while, he was poisoned by the universe and planted an irreparable root of the disease. How can it last so long? ”

"So I think that if there is any big filter, it is that the structure of complex organic life forms is too complex in the process of evolution, resulting in their own survival conditions in the universe becoming extremely harsh, and they will fall apart when the wind blows!" Xu Yunzhi said.

"If organic life is a very simple structure, such as a single-celled organism, then it is impossible to produce intelligent ......," Liang Jingjing said. ”

"That's it!" Xu Yunzhi said: "There are many similar theories, such as the Dyson sphere, which can only be said to be very sci-fi. We all know that the sun accounts for 99.86% of the mass of the solar system, so should we use that 0.14% mass to surround the sun? Moreover, those large planets, all of which are gas planets, occupy more than 80% of the mass of the 0.14%. The only terrestrial planets that can be used to build Dyson spheres are Mercury, Venus, Earth, Mars and so on. The material in these terrestrial planets, hydrogen, helium, nitrogen, accounts for the vast majority, and these materials do not make Dyson spheres, what do you say to build Dyson spheres? ……”

"Can't you go outside the solar system to find raw materials?"

"The nearest Centauri also has to run 4.3 light years," Xu Yunzhi said with a smile: "You can run so far, you still have this little energy, and you have nothing to do to make a Dyson ball to play?" ”

"Also, to meet the conditions for the survival of organic life, it is also extremely demanding. It was once believed that there were many planets in the universe that were suitable for life, but that was impossible. According to a certain human calculation method, our predecessors believed that there should be many lives in the universe with a high probability, and it is absurd to say that there are not a few intelligent lives. Human beings may be more lonely in the universe than they think! ”

"The Jones people have run 500 light-years and have not encountered a single organic intelligent life, which is probably the best footnote to your words......" Liang Jingjing muttered, "Could it be that the route they ran happened to be a place where it was difficult to generate life?" ”

"Probably not!" Xu Yunzhi said: "It's about the survival of the whole race, and they ran away to find a planet suitable for life, so they must have calculated it carefully...... How could they not know that the center of the Milky Way has a very high density of stars, and that planets within 6,500 light-years of the galactic center have a more than 95% chance of being hit by deadly gamma bursts, and that complex life can usually only survive on the periphery of large galaxies? ”

"Yes, I know," Liang said, "The solar system is about 27,000 light-years away from the center of the Milky Way, and it is located just right, and there is enough metallicity in the habitable zone of the Milky Way that can produce terrestrial planets." A little further away from the center of the Milky Way, the metal abundance is not enough to produce terrestrial planets. ”

"Yes, so the direction they chose is correct," Xu Yunzhi said: "They can't meet intelligent life along the way, and it can only be said that the probability of intelligent life in the universe is very small." ”

"Therefore, the home planet of the Jones people and our earth are both chosen by God," Liang Jingjing smiled: "No wonder religion is rampant!" ”

"It does have something to do with it!" Xu Yunzhi said: "In the center of the galaxy, the long gamma explosion in the universe is like a reset button, even if a planet has life, it will be swept away. It's too far away, and because of the lack of metal abundance, there can be no terrestrial planets, and life has nowhere to settle. Where life can be generated, that is, such a narrow so-called habitable zone, there are other knowable and unknowable reasons, can there be more life in the universe? ”

"What a pessimistic cosmology!" Liang Jingjing smiled: "So, astronomy is a regrettable science? ”

"Yes!" Xu Yunzhi nodded: "It's a pity that the earthlings have always set the goal of searching for extraterrestrial life in the center of the galaxy, which is really a big mistake. As an astronomer, to be honest, sometimes looking up at the starry sky makes you feel very empty, which is probably one of the reasons why Jones people say that we are not rational enough and have too strong a sense of substitution! …… Oh, Jingjing, I see you've been studying the history of science, have you gained anything? ”