Did the three-body civilization discover the solar system before Ye Wenjie sent out radio waves?

Three people have long known that there is such a star four light years away from them, which is brighter among the stars visible to the naked eye. But they don't know whether this star has a planet, whether there is life on the planet, and whether it is suitable for life. Even though electromagnetic waves can be emitted and received, there is no sign of intelligent life activities. Humans on earth have only used electromagnetic waves for decades. Because of its attenuation characteristics, electromagnetic waves will be too weak to be received without leaving the solar system. Except for the leaf signal amplified by the sun, it is impossible for the three-person to receive any electromagnetic wave signal on the earth.

Someone once asked, if Ye Wenjie didn't use the sun to send out electromagnetic signals, how would history develop? Three people can't find the earth people in a short time. But when they developed Naoko, things were different. As their nearest star, it will definitely be the first choice to launch Naoko. If Naoko reaches the solar system, he will find the earth, and he will find all the people on the earth and all the people on the earth. Santi people will learn about the history and culture of human beings on earth through Naoko, and they will also be surprised at the speed of the development of earth science and technology. Of course, it will also interfere with the particle collider and lock the earth technology.

The earth people are completely kept in the dark and still live leisurely. It is not surprising that basic science has not progressed for decades. Particle accelerators are getting bigger and bigger, but the results are not satisfactory. Many scientists fall into contradiction and even use theology to explain it. Only in the application of science by leaps and bounds, the spacecraft is getting farther and farther, and the moon, Mars, Jupiter, Saturn and the whole solar system are all human footprints. But that's all. Humans will never fly out of the solar system.

400 years later, in the face of three people invading. Humans on earth are helpless and easily give in. Three people rule the earth, and people on earth will kill if they don't obey. At first, you can be a slave to the three-person body. At last, the slave is not qualified and has to be killed. In the end, it may give the earth a private plot for human beings, or because the number of human beings has dropped sharply, the three-person people will protect human beings and put them in the zoo for the children of the three-person people to watch.

Before Ye Wenjie sent out radio waves, the three-body man discovered the solar system, of course, because the sun is the nearest star to the three-body galaxy after all. Three-body people have already conducted in-depth research on the solar system, but limited by the technology of three-body people, they have not found that the solar system is suitable for their own survival, nor do they know the existence civilization of the earth.

The first question: Before Ye Wenjie sent out radio waves, why did the three people know that the solar system had not invaded the solar system? Because the sun is the closest star to the three-body galaxy, we can imagine that the sun must be one of the brightest stars in the night sky of the three-body galaxy. No matter what round of three-body civilization, when looking up at the starry sky, it will have special feelings for this star. So now that it has been discovered, why don't the three people invade the solar system? There are actually many complicated reasons, and some specific astronomical knowledge is also involved.

First, the early three-body civilization did not have the desire of interstellar migration: compared with human civilization, the three-body civilization is an ill-fated civilization, facing the fate of early death at any time. Therefore, for a long time, the three-body civilization did not evolve to the birth of science, nor did it produce astronomy in the modern sense. Before the birth of 183 civilization, that is, "Copernicus" (the ID of the three-body game Wang Miao), the three-body people had the same idealistic understanding of the universe as early humans. Metaphysical thoughts such as cosmic calendar, sun hypnosis, and perpetual calendar of King Wen were born, and there was no idea of interstellar migration at all. After 183 civilization, when Santi discovered that his disaster originated from three suns, he focused on the prediction of the sun. He waited until 192 civilization proved that the three-body planet was completely unsolvable and doomed to be swallowed up by three suns before he made up his mind to fly out of his own galaxy and find a new home.

Secondly, after 192 civilization and before 196 civilization, the three-body people could not have a deep understanding of the solar system: after 192 civilization and before 196 civilization, the three-body people listed flying out of their own galaxies to find a new home in the universe as their primary goal of survival, but the solar system was the closest galaxy to the three-body world.

First of all, the three people can't determine the specific situation of the solar system through observation? Because the universe is full of interstellar dust, coupled with the non-luminous characteristics of planets, in reality, it requires very harsh conditions to directly see whether a star has planets. In reality, astronomers often use transit method to observe the periodic variation of luminosity of stars due to planetary occlusion; Astrometry, that is, accurate measurement of the orbit of stars; Gravitational lens method, observing the influence of mass on the light of a star when the planet is on the side of the star, etc., are all very indirect means to judge whether a star has a planet. Because these methods have limitations, it is necessary to finally determine whether a star has a planet. Is it a rocky planet? Are you in a livable area? Not only long-term careful observation is often needed, but also various methods are needed, and more accurate results can be obtained through repeated confirmation. Because of this, although human astronomers have long speculated that there are exoplanets outside the solar system, it was not until 1995 that the existence of exoplanets was finally confirmed, and it was not until 20 16 that there were planets in proxima centauri, the nearest to the earth.

The same is true of three people observing the sun. Although the three have been paying attention to the solar system since their birth, they want to determine whether there are planets in the solar system. How many planets are there? Are there any rocky planets? It's not easy, especially the solar system is special. It is not only a star that rotates in the opposite direction (there is a huge angle between the ecliptic plane of the solar system and the galactic plane of the Milky Way), but also there are so many planets, so before Ye Wenjie broadcast, the three people were unable to determine whether the solar system is suitable for their immigration.

Secondly, the three-body man has no ability to directly detect the solar system: if the solar system cannot be determined by astronomical observation, the rest can only be directly detected by launching detectors, but it is a pity that it cannot be done by the technology of the three-body man. Although the solar system is the closest galaxy to the three-body galaxy, it is also 4.3 light-years away. With the three-body technology, the detector can only accelerate to a few thousandths of the speed of light before the first fleet, which is about 300 kilometers per second, which is roughly equivalent to the theoretical propulsion speed of today's human vasimr limit. Although this speed is not low, it will take more than 4000 years to reach the earth.

Therefore, before Ye broadcast, the three people had known about the solar system for a long time and had a general understanding, but they were not sure whether the solar system was suitable for their own survival, and they didn't know that there was civilization in the solar system, so they naturally wouldn't invade the solar system rashly.

The second question: If Ye Wenjie broadcasts, will the three-body people invade the solar system? Yes! There is no doubt about it, because these three people have no choice. But the difference is that the time will be greatly delayed. According to Ye's recollection, the technological explosion of the three-body civilization that invaded the earth, that is, civilization 196 (calculated according to the three-body game), occurred decades before the first fleet set sail, that is, around 1900. Before that, they had sent detectors to the solar system and began to prepare for the invasion of the solar system. It's just that this detector can only reach a few thousandths of the speed of light, and it takes more than 4000 years to reach the solar system.

Around 1980, with the development of science and technology, the trio built the first fleet with the theoretical speed of 10% and the actual speed of 1%, and had a strong interaction force detector with the actual speed of 2%, that is, water droplets. Theoretically, it has the ability to invade the solar system. At this time, it just received Ye's broadcast, and determined that the direction of the solar system has its own suitable immigrant planet. Therefore, at the compulsory request of the Fuehrer, the First Fleet sailed in the direction of the solar system without determining its destination.

That is to say, if Ye Wenjie doesn't broadcast, it will take more than 200 years at the earliest, and the time when the water drops reach the earth to launch the doomsday war will determine the situation of the earth and launch an invasion. In other words, Ye's broadcast advanced the invasion time of the three-body people by more than 200 years. These precious 200 years have not only enabled the Santi people to develop Naoko ahead of time at any cost, but also locked in human science and technology, making mankind lose the precious opportunity to surpass the Santi people in science and technology. Moreover, it completely activated the stagnant three-body society and gradually went to the end of the road, so that it regained its vitality and began to fight for its own survival.

Committed to science, science fiction, focus on depth, welcome friends who like science fiction to pay attention to: deep science fiction! If you even have difficulties in the survival of your own civilization, will you launch a probe to explore whether the star system next door can adapt to survival? Obviously not.

The three-body civilization described in the book "Three-body" is about 4 light years away from the earth. As a detector, Naoko, even if the speed can reach the speed of light, it will take four years to reach the earth. Moreover, Ye Wenjie used the sun to emit radio waves, and it took him eight years to receive a reply from the Santi. "Do not answer, do not answer, do not answer!"

After Santi learned that there was civilization on the earth, Bai immediately held a meeting to talk about how to block the earth technology and send Naoko to fly to the earth for four years. Instead of choosing to organize people to rush to the earth immediately! Because they knew that they would encounter unpredictable consequences during the voyage of large troops, they simply blocked the earth science and technology with Naoko to avoid the explosion of the earth science and technology during the voyage of hundreds of years. (this is also to ensure that even if it is impossible to reach the earth in a limited time, the earth civilization has always been in a controllable stage. ) "You are a bug"

So this is also the law of burying the dark forest, which was put forward by Liu:

Even the three-person is bound by this law in the universe, which leads to the era of human deterrence against the three-person civilization in the book.

So it is not difficult to answer the question of the subject. First, their living conditions do not allow them to spend more resources to explore the universe. Besides, the universe is so big that they don't know where it is suitable for them to live. Just like we humans now, we can only launch detectors to see if there are any other life forms hijacking the detectors. Secondly, we can use telescopes to observe other planets suitable for human survival.

However, the three-body people can't be as comfortable as human beings, because they all have problems in their own survival, so they can't spend a lot of resources to detect, and they can only design observation stations to receive information from other civilizations. If they are stronger than me, forget it. If they are weaker than me, you will be finished.