I believe that many astronomy enthusiasts have heard of the extraterrestrial civilization search plan. This is a great plan for searching for extraterrestrial civilizations that humans began shortly after they left the earth. Before human beings walked out of the earth, we would still doubt the existence of extraterrestrial civilization, but when we really walked out of the earth and saw the vast universe, this doubt is basically gone.
From the perspective of the vast universe, the probability of the existence of alien civilizations is basically 100%, but before we really discover alien civilizations, we can only guess everything about them, including the appearance of aliens and aliens. Civilized social situation and scientific development, etc.
Alien civilizations are completely unfamiliar to us, so how can human beings look for them? Launch an interstellar probe? To search for alien civilizations through probes, scientists launched Voyager 1 and Voyager 2 in 1977. They both carry a golden compact disc on their bodies, which records the coordinates of the Earth and human information.
Scientists expect that when the Voyager spacecraft flies out of the solar system into the starry space, it will be captured by alien civilizations. Alien civilizations can know the existence of human beings and the coordinates of the Earth based on the information on the CD-ROM on the spacecraft, and then come to the solar system to contact and communicate with humans.
Is it possible that the plan to find alien civilizations through the probe will succeed? The answer is very slim. As we all know, the distance of the universe is based on light-years, and a small solar system, counting the diameter of the Oort cloud, has reached 2 light-years. At the speed of the Voyager, it will fly out of the Oort Cloud, which may not be possible for tens of thousands of years.
Scientists launch Voyager 1 and 2, not only looking for extraterrestrial civilization, they are also tasked with exploring the edge of the solar system. Of course, in the past, scientists had a biased understanding of the scope of the solar system. At first, scientists believed that the Kuiper Belt was the edge of the solar system, and as long as it went out of the solar system, it would be considered out of the solar system.
If the solar system is calculated out of the insolation layer, then Voyager 1 and Voyager 2 have already left the solar system. However, with the continuous advancement of science and technology, scientists observed and discovered the existence of the Oort cloud, which redefines the broad scope of the solar system. Below the scope of the new solar system, Voyager basically has no hope of getting out of the solar system.
It is basically impossible to be captured by an alien civilization if it cannot get out of the solar system, unless it happens that an alien civilization has come to the solar system. There is no hope for exploration spacecraft to find alien civilizations. Scientists have focused on the wireless signals of the universe. We all know that after humans entered the era of science and technology, they began radio research and exploration.
With the current technological strength of mankind, radio signal transmission is already a very common thing. The probes we send to all directions in the solar system also transmit information with the earth through wireless signals. Civilizations like humans that have not yet entered the first level are already using wireless signals, so it is inevitable that the wireless signals will be stronger for those alien civilizations in the universe where humans are still advanced.
Alien civilizations will use a lot of wireless signals in interstellar probes. These wireless signals spread in the universe and may be detected by human telescopes. In addition, if other alien civilizations have also observed the solar system and seen the earth, but since it is impossible to determine whether there will be civilization on the earth, they may also actively send very strong wireless pulse signals in the direction of the earth.
Since this signal is actively launched by an alien civilization, it may be more easily received by humans. Scientists hope to receive this mysterious signal and then decipher it to know the existence of alien civilizations and determine their location based on the source.
In addition to searching for signals of alien civilizations that may exist in the universe, scientists are also constantly searching for galaxies near the solar system to see if they may have living planets and intelligent civilizations. After detection, scientists really discovered a suspicious galaxy, which is our neighbor, the Biling galaxy.
Proxima Centauri is a star relatively close to the earth, it is only 4.2 light-years away from us. Current exploration has found a gas giant planet and a rocky planet 17% larger than the Earth in the lead galaxy. This rocky planet is located in the habitable zone of the star system, and there may be liquid water resources on its surface.
For the cognition of Proxima Centauri, many of my friends have adopted a science fiction novel called “Three Body”. The powerful Trisolaran in the novel came from Proxima. Many friends who have read the Trisolaran are wondering whether there will be a powerful alien civilization in the Proxima galaxy in reality?
Proxima Centauri is the neighboring star of the earth. It is such a year away from us, and naturally it has received great attention from scientists. The telescope has been monitoring the direction of Biling Star. Will there be a mysterious signal here? The effort paid off. Some time ago, scientists actually detected a bunch of mysterious radio waves, and its source was the close star of the Earth-Biling Star.
According to scientists, as early as April 2020, the Australian Parks radio telescope discovered the signal. This signal is different from the signal received before. It has slightly changed during the observation process in a manner similar to planetary motion. The change.
For this mysterious signal, scientists are very excited while also maintaining a cautious attitude. Whether it is a natural signal of celestial bodies or a greeting from Trisolaran civilization to humans is still unknown. If this is a greeting from Proxima Smart Civilization to mankind, I believe it will continue to reappear in the future.
Although scientists expect to discover extraterrestrial civilizations, if they find the existence of extraterrestrial civilizations in the vicinity of the solar system than the leading stars. It may not be good news for mankind. Hawking once said when talking about the mysterious radio waves from the universe: I hope that the radio telescopes in the world that can listen to the signals of the universe will not answer any suspicious signals.
Hawking believes that alien civilizations may not be friends, and there may still be the law of dark forests in the universe. Once the existence of the earth and human beings are exposed, it may bring us annihilation. The vast distance between the universe hinders the contact and communication between civilizations, but if the distance is relatively close, as long as the initial subluminal flight is achieved, there is hope to reach it.
The lead star is only 4.2 light-years away from us. This distance is very short in the universe. As long as the energy technology achieves controllable nuclear fusion, it is hoped that the primary sub-light speed flight will be achieved, and it will take decades to set off from the earth. You will be able to reach the Biling Galaxy. And controllable nuclear fusion technology, with human science and technology, also hopes to be realized within a hundred years.
If Proxima Centauri has an alien civilization and its technological strength is stronger than ours, then theoretically it has the technological strength to come to the solar system. Therefore, the existence of an alien civilization in such a close position is not good news for us. Once they have also detected the existence of the earth, it is difficult to say how the fate of mankind might be.