"Extraterrestrial Life must exist. The earth is too small and the universe is too big. How can we be alone?" Chen Mengchuan smiled and said to Crux, Thomson and Langmuir.
A group of people were resting on the sofa in the small living room, and the news of Edge of Sui Star No. 1's arrival at Europa had already spread.
Scientists at the level of Carl Sagan and Stephen Hawking believe that the observable universe is so vast that it is undesirable to say that life does not exist elsewhere except the earth. There is much controversial evidence that Extraterrestrial Life exists.
Crux and several people are also more inclined to believe that Extraterrestrial Life exists.
"In my opinion, Extraterrestrial Life may actually have been produced independently in many places in the universe, or it may have produced life in one place and then spread to other habitable planets."
"These two hypotheses are not necessarily mutually exclusive, but from the perspective of scale and probability, the Earth, as located in the habitable zone, has all the conditions to sustain the survival and evolution of species. In fact, from the beginning of the Phanerozoic Era in Earth's history to the present, there have been more than 500 million years and millions of biological species. Among them, only one species has successfully evolved into higher intelligent life, and that is us humans, instead of a variety of diverse higher intelligent life forms coexisting on the earth. This shows that under the same conditions, advanced intelligent life is not so easy to appear and exist." Chen Mengchuan expressed his opinion.
The alien civilization he saw in his dream made Chen Mengchuan very clear.
"Haha, Boss Chen, how do you explain Fermi Paradox?" Crux asked him with a smile.
Chen Mengchuan was silent for a while, then slowly said, "I think alien civilizations exist, but the different levels of civilizations, coupled with the spatial scale of the universe..."
The temporal distance between civilizations is too great to allow easy contact. Alpha Centauri B, the nearest star to Solar System, is also 4.22 light-years away. This means that even if the existence of this galaxy is equally willing and capable of discovering and searching for our intelligent life, it will take a long time for them to reach the earth, and this time is likely to have exceeded the lifespan of the species itself.
On the other hand, the time when humans broke out of the earth is only a few decades ago. Compared with the billions of years since the birth of the earth, the proportion is really short, even less than one billionth. The probability of being observed by extraterrestrial life is very low, and this also requires a prerequisite, that is, the other party also needs to have continuous observation capabilities, otherwise the probability of being accidentally observed has to be squared again.
The probability that the other party will observe and send a signal that can be accepted by us is lower; again, the signal transmitted by both parties must be large enough so that it will not be overwhelmed in the interstellar space calculated in light years and can be traced.
Dozens of Tenzhi Technology have now initially mastered space shuttle technology, but they are still far away from the speed of light. Even if Tenzhi Technology reaches the speed of light at a technical level, it will take several years of non-stop flight to get to the nearest Star System.
Several people communicated and discussed the topic of extraterrestrial civilization. Why do they all think that Extraterrestrial Life exists, but humans have not been able to discover it?
After Chen Mengchuan expanded on the reasons of orders of magnitude, Thomson and Langmuir extended many views.
Thomson He believes that it may be that it is difficult for life to expand from one part of the galaxy to another, so it has not yet reached the earth.
Langmuir is more pragmatic. He said that he raised a very objective situation, that is, the time for humans to actually search for aliens is too short. In the final analysis, it is less than a hundred years.
"Perhaps alien civilization has discovered humans, but the signals sent back have not yet reached the earth. After all, signal transmission also takes enough time."
"The people on earth didn't realize that the signals sent back were the products of alien civilization. Or maybe the signals sent by people on earth accidentally destroyed alien civilization. In short, everything is possible, isn't it? Boss Chen." Crux said with a smile.
Chen Mengchuan smiled, his expression looking relatively calm.
"Boss Chen, why don't you summarize it for us?" Thomson added some black tea to Chen Mengchuan's cup.
"Summary? Haha, thank you, Thomson." Chen Mengchuan took the tea cup and said thank you.
"Actually, in addition to the quantitative reasons, I think there are three relatively large possibilities."
"One is due to technical reasons. The technology of many civilizations may never be able to effectively transcend the galaxy. Even if they have certain technologies, this technology is still not enough to transcend the galaxy. Moreover, the exploration of life is a very unimaginable and huge issue. From the perspective of our human civilization, it may be that the method of searching for Extraterrestrial Life is incorrect, so it has not been seen yet."
"The time for civilizations to broadcast radio signals to the outside world is very short, especially because most technological civilizations exist for a short time and cannot leave their home galaxy. As a result, the density of technological civilizations and the radio broadcast density of these civilizations are too low. The signals are too weak and difficult to detect. Or some broadcast signals that once existed in Solar System before humans began to detect signals no longer exist in Solar System due to the short broadcast time. In other words, we are constantly missing out."
"Or it could be called the technological singularity. Technical civilizations generally pass through the technological singularity. After that, it is no longer possible or meaningful to interact with humans who have not passed through the singularity. For example, will we find ways to communicate with floating people? Obviously it is very difficult, because they are no longer on the same level."
"There is also a technical reason, that is, the alien technological phenomenon may be too similar to the natural phenomenon to be difficult to distinguish, so we have not been able to crack it."
After Chen Mengchuan said this, he paused and took a sip of black tea.
"Then what do you think of Dark Forest Hypothesis? Boss Chen. Could it be that the resources for civilization to survive in the universe are limited, and it is difficult for different civilizations to communicate effectively to express goodwill due to distance limitations, so more developed civilizations tend to They tend to destroy less developed civilizations that may compete with them for resources, and less developed civilizations tend to hide their existence to avoid attacks. Based on this, some of the weak signals sent by humans are deliberately ignored?" Thomson asked him.
Just after he finished his question, Langmuir also added, "Yes, Dark Forest Hypothesis, and Zoo Hypothesis. Perhaps alien civilization has far surpassed human civilization. In order to observe the natural behavior of humans, they intentionally avoid direct contact. This is also possible."
"Ha, maybe Extraterrestrial Life is not interested in answering me, just like receiving a wrong call from someone when you are upset."
Chen Mengchuan nodded. "Everything you said is possible, or maybe they have come into contact with humans, but they exist in a higher dimension that humans cannot detect, or they deliberately hide the evidence of contact. Of course, it is also possible that aliens only contact suitable humans. Although they have no intention of hiding evidence, they have no intention to publish it widely. To sum up, in one sentence, everything is possible."
"Hahaha..." Everyone laughed, and the atmosphere on the scene was very good.
Chen Mengchuan's smile hid some faint worry. With a slightly wandering look, he pulled out a cigarette from the box on the table, lit it and took a deep breath.
Could it be that the alien civilization in the dream was a disaster caused by humans constantly sending various radio waves and signals into outer space in the early years in an attempt to find aliens?
The coldness and cruelty of alien civilization may just be the most realistic portrayal of natural selection. The message of human self-destruction finally resulted in destruction.
Human civilization at that time had made the greatest resistance, but these resistances were meaningless. Killings spread across the entire earth almost in an instant. Human beings on the entire earth were being wiped out. In just 9 hours, human beings were completely emptied.
Chen Mengchuan exhaled the cigarette in his mouth, and his eyes slowly became determined.