Why are humans committed to finding extraterrestrial civilization?

Personally, I feel that various reasons are mixed together, and for the sake of all mankind, there are also some personal selfishness.

I don't know if you have seen ridley scott's Alien Prometheus, which was released on 20 12, and it is still fresh in my memory. Why do humans March into extraterrestrial civilization is a very naked talk. This reason is very complicated, all kinds of desires and beliefs are intertwined, and finally the determination to explore extraterrestrial civilization is reached. In real life, people's thoughts are almost the same as those in movies.

Let's talk about when extraterrestrial civilization is.

Extraterrestrial civilization generally refers to the intelligent life body that exists outside the earth and develops to a certain degree of civilization, and the civilization established in the field outside the earth. They have not been observed by life on earth at present, but they often appear in many fictional works. They and aliens are often discussed or displayed in human literature programs.

The classification of extraterrestrial civilizations is based on the scale method from 65438 to 0964 proposed by the former Soviet astrophysicist Kadashev.

According to the famous Drake formula, there are at least tens of thousands of civilized groups with higher wisdom in our galaxy alone. The formula is: N=Ng×Fp×Ne×Fl×Fi×Fc×FL, which is a formula used to infer "the number of extraterrestrial civilizations that may come into contact with us in the Milky Way", where n represents the unknown number of extraterrestrial civilizations.

No matter how rigorous a scientist is, facing the vast starry sky, it is impossible to say "there are no aliens".

Although the distance of tens of thousands to hundreds of thousands of light-years in space may never allow two civilizations to "get together", according to mathematical probability, our universe should be a very lively "big family". Harmony is another matter. Therefore, human beings have their own ideas and devote themselves desperately to extraterrestrial civilization.

1, the origin of mankind

I often hear such a long-standing question in movies and TV, "Where do humans come from?" .

As the only species with language wisdom on the earth, although we live on the earth, it seems that we are incompatible with other species on the earth.

From the food chain, human beings can be said to be at the top of the food chain, but in the biological knowledge we have learned, the number of creatures at the top of the food chain is definitely the least, but human beings are the most species at the top of the food chain on earth.

As far as the ecosystem is concerned, all species living on the earth will follow the balance of the ecosystem, except human beings. In order to maintain a good ecosystem, all creatures on the earth have natural enemies, while humans basically have no natural enemies. When we analyze alien invasive species, we can know that if there are no natural enemies, invasive organisms can destroy the local ecological balance, just like rabbits in Australia. On the other hand, human beings have been destroying the earth's ecosystem.

In the process of evolution, all living things we know have a transition period. However, human beings appear out of thin air. The evolution of human beings evolved from primate species, but the transition period from primate species to human beings was not given in the study.

Then humans will wonder if they are really the result of alien species migrating directly to the earth. Just like the plot in Prometheus Alien, Professor Sean's dream is to know where he comes from. It seems that only extraterrestrial civilization can give us the answer.

2. Human curiosity

The reason why human civilization has developed so rapidly is that human beings have their own consciousness and strong curiosity. Driven by curiosity, they constantly ask questions and seek answers to them, which also promotes the development of human science and civilization.

But looking for extraterrestrial civilization in the eyes of scientists is not as simple as curiosity. This is human nature. It is precisely because of curiosity that human beings will develop rapidly in technological changes. When human beings are not limited to the earth civilization, extraterrestrial civilization will certainly become the object of human exploration.

What's more, extraterrestrial civilization itself is challenging. Through astronomical observation, it is found that there are at least 200 billion stars in the Milky Way alone, and the total number of galaxies in the universe is more than hundreds of billions! Among them, planets are by no means rare. Since the first exoplanet was discovered in 1995, more than 4 100 have been discovered in just over 20 years.

According to these data, people can estimate with confidence that the probability of terrestrial planets around the stars in the Milky Way is about 19%, which means that there are at least 40 billion terrestrial planets in the Milky Way. If human civilization is unique, then the probability of its existence is less than one in 40 billion, which violates the "small probability event principle" in probability theory. Therefore, astronomers can conclude that there must be other civilizations in our galaxy.

3. Some people's personal desires

I was inspired by the alien contract. You know, sometimes the progress of a scientific direction may only be caused by a person's desire. For example, the purpose of investors in movies is to live forever. So, it doesn't exist in reality? I think there must be such a person.

What can humans do to find extraterrestrial civilization?

Needless to say, the first one must be the launch detector. At present, the navigation ability of human beings is only 210.90 billion kilometers, about 0.002 light years. But the universe that humans can see is much farther away. According to Hubble's photos of the extremely deep field, the farthest galaxy observed by human beings has exceeded 65.438+0.3 billion light years, which means that baby universes, just a few hundred million years old in BIGBANG, has been observed.

Nevertheless, this observation is only a little starlight, or even a photon, and no more data can be obtained.

The second one listens. Because all the energy in the universe will emit electromagnetic waves, any civilization must use electromagnetic waves when it develops to a certain extent, so the communication ability of the universe is a symbol of the level of cosmic civilization. Humans have built a large number of point-ray telescopes, constantly looking for electromagnetic waves in all bands in the universe, and strive to separate regular electromagnetic waves with signs of civilization from the complicated electromagnetic waves.

But unfortunately, so far, no valuable evidence has been found to prove the existence of extraterrestrial civilization.