Is it possible that human beings are the highest civilization in the universe now?

In ancient times when science and technology were underdeveloped, people thought of some unexplained natural phenomena, and whether there was a superior god. Then came today's pantheism, which holds that everything is animistic. At that time, human beings believed that all natural disasters were spiritual, and the arrival of natural disasters was a punishment from heaven.

Through the research of Copernicus, Jordan Bruno, Friedrich William and others, we know that there is no god in the sky, only the Milky Way, and the earth is only a small existence in the Milky Way. With the development of space technology, human beings take long-distance photos of outer space by controlling the artificial satellite system. There are photos that objectively record the existence of other planets.

After investigation and study, among the eight planets in the solar system, only the earth has life now. But the Milky Way is so big, we still can't know whether there are aliens, let alone whether alien civilization is far away from us.

As for alien civilization, in our inherent cognition, it should be a civilization beyond our earth and an advanced civilization. In fact, this is a state of mind. Without any evidence, we can't give an accurate answer. All conclusions are guesses.

Because "alien civilization is advanced civilization" is the answer from the assumptions given by people before. In fact, this is not the answer to the truth. The only thing that is beyond doubt is that the probability of other life forms in the Milky Way is close to 100%, but human beings have not found the existence of alien civilization so far.

In this regard, some astronomers have given an explanation that alien civilization is too high for us to find. Maybe they have crossed the stars and gone to other galaxies. But existence will leave traces, but we found nothing.

After that, many people wondered what kind of level alien civilization should be. Most people think that alien civilization should exist as an advanced civilization, and there are many scientific achievements that surpass us. As described in science fiction, their physique has been optimized since birth, their IQ is superior, their technology is highly developed, and crossing the starry sky has become an instant. We are unmatched by other alien civilizations.

Of course, we think that alien civilization is a kind of advanced civilization, and another reason is that the earth's existence time is too short compared with the temple and the Milky Way, and the time of human civilization on the earth is only a fraction of the earth's existence time. In front of the universe, human beings are too small.

The universe has a history of 138 billion years, which is enough time for the emergence, development and extinction of several generations of civilizations. Among these civilizations, there may be alien civilizations for hundreds of millions of years.

There was no concept of interstellar space before, and there was no concept of civilization level. The concept of civilization didn't come into being until Nicola Kardashev put forward the standard of classifying civilization by energy level in 1960s. In Nicholas's concept of civilization, the higher the level of energy that can be used, the higher the degree of civilization.

Among them, Nicholas divided the degree of civilization into seven grades. From K 1 to K7, the level of civilization gradually rose. Among them, K4 to K7 belong to cosmic civilization and can communicate with other galaxies outside the solar system. In Nicholas's definition of civilization, K 1 civilization belongs to an energy body that can fully grasp its planet. Up to now, the earth civilization has not reached the level of k 1. But it is also because the cosmic energy body is huge, and perhaps the cost of the existence of alien civilization is lower than ours.

In the universe, energy body explosions happen every day. When some stars evolve to the later stage, a large-scale energy explosion will occur. These stars are also called supernovae. The energy produced by the explosion is comparable to that released by the sun, and the electromagnetic radiation produced by the explosion can illuminate the whole galaxy.

Gamma rays produced by supernovae are a kind of lethal weapon, which has the characteristics of wide radiation range and great lethality. Some astronomers believe that some experts believe that a mass extinction event on earth was caused by gamma-ray strafing caused by supernova explosion. Every explosion of a supernova will do great damage to galaxies.

The development of mankind to this day is a lucky accumulation again and again. Fortunately, there are living conditions suitable for life. Also, when humans were born, large and fierce prehistoric animals such as dinosaurs were extinct. Fortunately, there is a safe interstellar space, and the earth has not encountered a close-range explosion supernova. Fortunately, the gamma rays released by the previous supernova only slightly swept the earth and did not lead to the end of life on earth.

Summary: However, the number of stars in the solar system is small, and the massive stars are in a young age, so people don't have to worry about the danger caused by supernova explosions for a long time.

Humans will be safe for a long time. During this period, human civilization may reach interstellar civilization, even cosmic civilization, and everything is possible. Under the contrast of different interstellar environments, perhaps a large part of alien civilizations died of various cosmic disasters. Perhaps the existing alien civilization is a low-level civilization compared with the earth civilization.

In ancient times when science and technology were underdeveloped, people thought of some unexplained natural phenomena, and whether there was a superior god. Then came today's pantheism, which holds that everything is animistic. At that time, human beings believed that all natural disasters were spiritual, and the arrival of natural disasters was a punishment from heaven.