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Modern science believes that the birth of human beings Born more than 2 million years ago, apes creatures lived on the earth. At that time, there were many other creatures living on the earth. In order to develop for a long time, apes chose to live in groups. Living in groups not only It can promote opportunities for mutual communication and effectively resist foreign invaders. Scientists have found through research that frequent communication can make ape brains become smarter. Because apes often communicate together, apes' brains become smarter and eventually successfully evolve into humans. Humans are the most intelligent life on earth. Since the birth of humans, humans have begun to continuously explore the mysteries of the world. After thousands of years of technological development, humans have now been able to go beyond the earth and explore the universe. This shows that the speed of human technological development is still very fast.
After humans walked out of the earth, they discovered that the earth is not the only world. In addition to the earth, there are many planets in the universe. In the solar system, Mercury, Venus, Mars , Jupiter , Saturn , Uranus , Neptune are all planets. In the Milky Way , the number of planets is about 40 billion to 100 billion, the number of stars is about 100 billion to 400 billion, and the diameter of the Milky Way is only 200,000 light years. Compared to the universe, the Milky Way is like a grain of sand on the earth. How big is the universe? Now scientists are also actively exploring. After humans leave the earth, the two things they want to know most are: How big is the universe? In addition to life on earth, is there also alien life in the universe? With these two questions, mankind embarked on the path of exploring the universe.
Scientists have also made a lot of efforts to search for extraterrestrial life. 45 years ago, scientists launched the Voyager 1 and Voyager 2 probes to the outside of the solar system. The purpose of launching these two probes was to let them fly out of the solar system and explore the mysteries outside the solar system. At that time, scientists installed Voyager 1 and Voyager 2 probes. The golden record contains the sounds of nature, animals, humans and the location of the earth. Scientists believe that if Voyager 1 and Voyager 2 fly out of the solar system and are discovered by aliens by chance, the aliens may find the location of the earth based on the information on the golden record. At that time, many people believed that this golden record might bring unnecessary trouble to humans, but now it seems that we have overthought it.
Scientists have calculated that it will take at least tens of thousands of years to fly out of the solar system at the speed of Voyager 1 and Voyager 2, and the batteries of the Voyager 1 and Voyager 2 detectors are about to run out. After the electromagnetism is used up, Voyager 1 and Voyager 2 will wander in the solar system forever. Therefore, it is basically impossible to expect Voyager 1 and Voyager 2 to explore extraterrestrial life. Currently, scientists are observing the universe through astronomical telescopes. In the universe, scientists have discovered many Earth-like planets, such as Kepler 452b, Proxima Centauri b, etc. These planets are all in the habitable zone of the star system, and the possibility of birthing life is also very high. However, telescopes can only observe the approximate position of the planet, but cannot see the specific situation on the planet, so humans have not found extraterrestrial life until now.
Why do scientists only observe planets in the habitable zone of star systems? Scientists believe that only when a planet is in the habitable zone of a star system can it have a suitable temperature and surface water resources can exist in liquid form. The reason why the earth can give birth to life is mainly because the earth meets the basic conditions for the birth of life, such as suitable temperature, sufficient air, abundant water resources, a strong magnetic field, a thick atmosphere, etc. If other planets can meet these conditions, then the possibility of life being born on other planets will also be very high. If this is the case, why haven't humans found aliens yet? Could it be that aliens do not exist at all? In fact, the possibility that aliens do not exist is almost very small. After all, there are too many planets in the universe. There are tens of billions of planets in the Milky Way, let alone planets in other galaxies.
According to the conditions for the origin of life on earth, there should be a lot of extraterrestrial life in the universe. Even many scientists believe that there is extraterrestrial life in the universe. Once Professor Yang Zhenning was asked in an interview: Do you believe there is a God in this world? Professor Yang Zhenning replied: If the God you call is human-shaped, then I think there is no such thing. If you ask me if there is a creator, then I think there is, because our universe is not accidental. Since many scientists believe that aliens exist in the universe, it means that aliens should exist in the universe, and scientists believe that there are not only aliens in the universe, but also alien civilizations that are more powerful than human civilization. Why do they say this? According to scientists’ research, we know that the universe was born 13.8 billion years ago.
Scientists have discovered through research that celestial bodies in the universe began to form 41 billion years after the Big Bang. That is to say, 1 billion years after the Big Bang, the first planets appeared in the universe. Our earth was born 4.6 billion years ago. This shows that our earth is not the earliest planet to be born. According to the speed of the origin of life on earth and the speed of evolution, in the Big Bang 5 About 000 million years ago, the first batch of planets born in the universe already had intelligent life on them. If the first batch of planets still exist in the universe, then by now, the first batch of intelligent life has survived in the universe for billions of years. Compared with human civilization, their civilization is many times more powerful than human civilization. According to the Kardashov Index, the civilization level in the universe can be divided into four levels, namely first-level civilization, second-level civilization, third-level civilization, and fourth-level civilization.
At present, the level of human civilization is less than the first level civilization, and can only be regarded as a level 0.7 civilization. So how is the level of cosmic civilization calculated? Scientists believe that if a civilization can utilize all the resources on this planet, then this civilization has reached a first-level civilization. Currently, humans are not able to utilize all the resources on the earth. On our earth, there are many resources that can be utilized, such as coal, oil , natural gas, flammable ice Wait, now humans are not able to develop all the resources on the earth, so the level of human civilization has not reached the first level civilization. The second level civilization can use all the resources in the star system, the third level civilization can use all the resources in the galaxy, and the fourth level civilization can use all the resources in the universe. It has only been a few thousand years since the birth of human civilization.
In just a few thousand years, human beings have been able to walk out of the earth. This shows that the technological development of intelligent life is very fast. It is difficult for us to imagine how far their technology has developed in a civilization that has experienced billions of years. So how big is the gap between human civilization and the fourth-level civilization now? Scientists have calculated that even if the annual growth rate is 0.1%, a civilization can develop into a Level 4 civilization within 100,000 years. Therefore, when a civilization develops for more than 1 billion years, its civilization level should reach a Level 4 civilization. How powerful is a Level 4 civilization? Many scientists speculate that when a civilization reaches Level 4 civilization, they may have been able to enter the parallel universe. The idea of parallel universes can be traced back to 1954, when Hugh Everett III, a student at Princeton University, put forward a bold conjecture.
He believes that parallel universes are the same as our universe and are related to our universe. These parallel universes are tributaries derived from our universe. Our universe may also be tributaries derived from other universes. In parallel universes, any living thing may have a different ending, and it may be possible in other universes. In its universe, dinosaurs are still living on the earth, but humans have not appeared. It is also possible that the progress of each parallel universe is the same, but everyone's life is different. For example, in this universe, you may be a teacher, but in another parallel universe, you may be a doctor, scientist, boss, etc., which means that your life has countless possibilities.
In 2015, the deep space radio telescope set up by the United States in Australia intercepted a mysterious repeated signal. Based on the attenuation curve of the signal, scientists inferred that the signal was emitted 50,000 light-years away from the earth. Later, after many deciphers, the scientists finally deciphered the content of the signal. However, this content made the scientists very confused. The content was: "Please direct us to the fourth universe. There is an explosion here. The situation is very dangerous. The location is in the 12th Galaxy." Based on the content of this destruction, we can know that this message is a distress message, but what does 12 galaxies and the fourth universe mean? Could it have something to do with parallel universes? If the information translated by humans is correct, it means that parallel universes do exist in the universe.
At present, scientists are also actively studying the mysteries of parallel universes. With the advancement of human science and technology in the future, we may be able to find parallel universes. Many people think that the entrance to parallel universes may be related to black holes . The characteristic of black holes is to continuously swallow To eat matter, there may be a mysterious celestial white hole on the other side of the black hole. The black hole and the white hole are connected together to form a wormhole. The wormhole may be the entrance to the parallel universe. If we can enter the black hole, we may be able to travel to another universe. In the future, with the development of human technology, we may be able to find parallel universes. In addition to parallel universes, level four civilizations may have discovered four-dimensional space. So far, four-dimensional space is a fictional concept, while three-dimensional space is real. The world we live in is three-dimensional space.
In many science fiction movies, there are also descriptions of the four-dimensional space. In the four-dimensional space, there are no closed objects, no objects are blocked, and everything is completely exposed. The visual impact of this scene is very obvious. Although the four-dimensional space is a dimensional space imagined by humans, it is very difficult to truly describe the four-dimensional space. In love In Einstein's theory of relativity, he proposed the theory of three-dimensional space, and believed that we live in a universe that is composed of three space dimensions and time dimensions, and is collectively called four-dimensional space. For us, four-dimensional space is a completely untouched field, just like one-dimensional creatures have no way to contact width, two-dimensional creatures have no way to contact height, and three-dimensional creatures have no way to contact time. However, through speculation on dimensional space, scientists can find some laws of four-dimensional space.
However, from the perspective of three-dimensional space, objects in four-dimensional space are very difficult to imagine. For example, Klein bottle , a Klein bottle is actually a bottle. Its mouth is twisted and connected to the bottom of the bottle, and the bottom of the bottle is opened to become an entrance. If you keep the mouth inward, you can walk to the inside, and if you walk all the way from the inside, you can walk to the outside. This structure can only exist in four-dimensional space. , if a four-dimensional object exists in a three-dimensional space, then what we see is only the projection of the four-dimensional object in three dimensions, just like an ant falling on a two-dimensional plane. A two-dimensional person can only see 6 points. Only an array composed of countless intersection points between the ant and the two-dimensional object can be seen as an ant. If it is projected on a two-dimensional plane, it is a painting, and its three-dimensional shape cannot be imagined, so in three-dimensional space, the Klein bottle is just a slice of the real Klein bottle.
There may be a difference between the Klein bottle we imagine and the actual Klein bottle. For us humans, these are mysteries that humans cannot explain now, but for level four civilizations, these are not difficult at all. Things, maybe they have solved these mysteries. Human civilization is very different from Level 4 civilization. Maybe Level 4 civilization has mastered many secrets that we don’t know yet. There may be many Level 4 civilizations in our universe. If this is the case, then why don’t Level 4 civilizations come to earth to find us? In fact, for advanced civilizations, coming to Earth is of little significance. Scientists believe that the development of any civilization requires resources. For level four civilizations, the resources they need may be black holes, galaxies, etc., while the energy we need is coal, oil, natural gas, etc.
Compared with the energy required by level four civilization, these energy sources on the earth are not worth mentioning at all, so their coming to the earth has no effect at all, and their coming to the earth is a very big pressure for humans. Now that we don’t know the existence of aliens, we will not worry about aliens attacking the earth. Once we discover aliens and aliens come to the earth, then we We must always pay attention to the movements of aliens, because we are afraid of them attacking the earth. For advanced civilizations, it is too easy to attack low-level civilizations, which is simply reduced to a strike. It is just like attacking ants and killing them easily. In the eyes of a fourth-level civilization, there is no difference between us and ants on the earth. Therefore, many scientists warn humans not to contact alien life easily, otherwise it will bring unnecessary trouble to the earth.
At present, humans cannot even fly out of the solar system, let alone search for extraterrestrial life. However, the editor believes that humans are the most intelligent life on earth, and human technology is constantly progressing and developing. In tens of thousands of years, human civilization will reach Level 3 or Level 4 civilization. By then we will be able to know whether there is alien life in the universe. The editor hopes that humans can realize their dreams as soon as possible and that this day will come as soon as possible. Is there anything you want to say about this?
