British scientists recently believed that there are at least 36 alien civilizations in the Milky Way. How did they arrive at this number, which includes zeros and integers?

The answer is artificial intelligence algorithms. They have designed a unique model and algorithm to predict the number of alien civilizations in the galaxy. This model includes some physical quantities, dependencies between forces, and the life cycle of celestial bodies in space. For example, the formation and death of the solar system, and the evolution of all stars in the Milky Way.

Using this algorithm, when the diameter of the Milky Way is at least 100,000 light-years and contains at least 100 billion stars, there are at least 20,000 planets like the Earth in the habitable zone, and the entire There are approximately 300 billion Earth-like planets in the universe. On the basis of the 20,000 Earths in the Milky Way, scientists have also taken into account the factors of liquid water and magnetic fields, because with them carbon-based life can evolve smoothly until civilization appears.

At this point it is time to define civilization and intelligence. Since humans cannot discover alien civilizations that are still in the Stone Age, intelligence here refers to aliens that can communicate with humans or can be discovered by humans. Star civilization.

After clarifying this definition, as the history of life on earth has been 38 years long and the history of human civilization is 10,000 years, astronomers believe that an alien civilization must be at least

our current technological level. It will take another 100 years of development to be discovered by human civilization. This means that the 36 alien civilizations in the Milky Way are at least 100 years more advanced than humans.

If you think 100 years is not that long, think about what it was like 100 years ago. At that time, electrification was not yet popular, let alone satellites and the Internet. Therefore, scientists believe that it is 100 years ahead of the current stage of human civilization. The technological strength of alien civilizations may be 200 or even 300 years ahead of humans, because technological explosions do not only occur on earth.

When all the above definitions were simplified into parameters and entered into the computer, scientists finally believed that there should be

30 to 36 intelligent civilizations in our galaxy.

This result was also published in

"The Astrophysical Journal"

, which triggered other scientists and science fiction enthusiasts to think about how to further contact these dozens of aliens. civilization?

First of all, the computer shows that the average distance of these 36 alien civilizations is 17,000 light-years from the earth. This means that if we contact them now, it will take 17,000 years for them to receive and reply to humans.

It comes back and forth. 34,000 time

, such a long time is enough for human civilization to leave the solar system or even the Milky Way.

And the most regrettable thing is that human civilization has only received electromagnetic waves from the universe for a few decades, while alien civilization may have contacted the earth 300 years ago, but humans could not feel it at all at that time.

In the same way, if the dating signals we send into the universe are to be received by alien civilizations, they also need the ability of alien civilizations to receive them. In other words, both the transmissions of human civilizations and the alien civilizations can be received. Must be in the

same time window

, otherwise it will be missed due to insufficient transmitting power or insufficient receiving sensitivity.

Overall

Regardless of whether there are 36 alien civilizations or 360 alien civilizations in the Milky Way, it has little to do with the current human civilization. Unless these alien civilizations suddenly jump to the vicinity of the earth in the next second, there will never be any in our lifetime. Those who may discover their existence, and those who have a real chance of discovering aliens in the future, are only space travelers after human civilization enters the age of great exploration of the universe.

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