How terrible is level 4 civilization?Why do scientists hardly mention level 4 civilizations?

Although human beings are currently the hegemon of the earth, before human beings have appeared, there were still giant worms, dinosaurs, etc. on the earth. Among them, dinosaurs ruled the earth for up to 160 million years. Unfortunately, due to 65 million years ago, it was 65 million years ago. A small asteroid hit the earth and eventually extinct.

It is not difficult to find that compared with the previous overlords, the value of force is not worth mentioning, and there is no advantage. However, human wisdom is not comparable to any creatures on the planet, especially the human ability of human beings. Being able to log in to other planets and explore the universe looks very advanced.

However, scientists believe that it is impossible for such a vast universe to be the only intelligent civilization of human beings. There should be a variety of advanced civilizations in the entire universe. Will there be four levels of civilization? How terrible is level 4?

Division of the level of cosmic civilization.

So far, the discussion of alien civilization is endless. We have been looking for the trace of alien civilization. For example, when the traveler's number one is lifted off, a metal record is also carried to find alien civilization. But unfortunately, there is always nothing.

But even so, we still have not given up. After all, the universe is very vast, and it is very likely that there is an alien civilization. So humans have not discovered it because the level of human civilization is too low?

In the 1960s, the Soviet astronomer Caldashev roughly divided the cosmic civilization into three levels based on the technical level of civilization, the amount of energy, and the size of the activity space.

The first level is the planetary civilization that can use all the resources on our "mother planet", but until now, we humans are not able to fully use all resources on the earth. Level is less than level, only 0.7.

The key factor restricting the development of the cosmic civilization is energy, so the energy that the second -level planet civilization can use is much more than the previous level. It can use the energy of the entire star system and move in the entire star. Think of the energy of the entire solar system and the picture of the movement in the solar system.

In addition, this level divides a name, called Kaldashev level. There is also the concept of the Kaldashev index, which is used to represent the development level of each cosmic civilization.

In general, the lower the level of the cosmic civilization, the less resources that can be used, and the lower the relatively scientific and technological level. Before the advanced civilization, the low -level civilization is like an ant in front of humans.

The above is the three more common levels of civilization, but in the later development process, astronomers considered various factors and extended these three civilization levels to seven levels. Rarely mentioned by scientists, why is this? How terrible is level 4?

The powerful 4 -level civilization may not exist.

The reason why scientists rarely mention the four levels of civilization are the following reasons. First of all, from the perspective of the civilization divided by the above, the higher the level, the greater the energy you have. Then, the fourth -level civilization will be larger than it, and we cannot imagine the development of its scientific and technological level at all.

Secondly, since there is such a powerful energy, the energy consumption is naturally very large. According to the Kaldashev index, the power of the first -level cosmic civilization, the second -level cosmic civilization, and the third -level cosmic civilization are 10^16W, 10, and 10, respectively. ^26W and 10^36W, which can be calculated, the power of the fourth -level cosmic civilization will be 10^46W.

Many people may not have much concept of this number. We compare it with the sun. The data shows that the power of the sun is about 3.8 x 10^26W. In front of the powerful cosmic civilization, wouldn't we even be not even ants? I feel creepy when I think about it.

In the end, the four -level cosmic civilization may not exist. For a long time, we are all looking for alien civilization. Unfortunately, whether it is based on the highest detection technology of human beings, or from our cognition of the universe, first Not to mention those advanced civilizations, even the lowest civilization has not been discovered, and this is most likely because level 4 civilization does not exist.

Furthermore, the third -level civilization, which is slightly inferior to the fourth -level civilization, has not been discovered, not to mention the fourth -level civilization, so before you find it, there is no meaning of too much discussion. Besides, we can’t imagine the four now. Class civilization.

In short, the so -called cosmic civilization level is just a simple level division, and there are often such level divisions in our daily life. Therefore, everyone does not need to be too true. After all The development of the main development, only the strong technology can answer the doubts.

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