How powerful can the top civilization in the universe be?

2020-12-28 | Science Dock Original |

How powerful can the top civilization in the universe be?

The universe has a history of 13.8 billion years since its birth. The theory describing the origin of the universe is Big Bang cosmology. Under this theoretical framework, the universe is born between 10s and 20 minutes, which is the first in the universe.The time for the formation of batches of nuclei, that is, protons and neutrons, mainly protons, which are the nuclei of hydrogen. In the early days of the universe, the universe was too hot and the density was also very high. Photons from all directions carried huge amounts of energy and impacted electrons.The universe is dark at all times, and photons are absorbed by many particles and then scattered. It is impossible to maintain a regular straight line of travel, so the early universe did not have a trace of light.

When the temperature of the universe drops, photons are no longer so unscrupulous, so protons can smoothly capture electrons to form the first batch of atomic hydrogen in the universe. It is precisely because of this that the most abundant content in the universe is also hydrogen, followed byIt's helium. The composition of the first generation of stars is these two elements, there were no heavy elements at that time.

The first batch of stars appeared when the universe was about 180 million years old. At that time, the universe still could not meet the conditions for forming planets, because there were still no heavy elements. The first batch of stars were massive and very unstable.The lifespan is only millions of years. The core of stars is undergoing nuclear fusion, and heavier elements begin to appear. As one star after another erupts into supernovae and is scattered in the universe, then the heavy elements are in the universe.Diffuse.

After most of the first batch of stars exploded, the second generation of stars began to appear on the scene, continuing the task of focusing on element synthesis, and then adding heavy elements to the universe in the form of supernova explosions, according to astronomers using telescopes to discover, The oldest planet can be traced back to 12.7 billion years ago. At that time there were enough heavy elements in the universe to form terrestrial planets. Although the possibility is small, it is still possible.

We assume that a terrestrial planet appeared and simple life appeared 12.7 billion years ago. According to the evolution of life on the earth, it can develop to a level equivalent to the current human civilization in about 4 billion years, and our sun belongs to the firstThe three generations of stars were born 5 billion years ago, and the earth was born 4.6 billion years ago, so the first generation of civilization may lead human civilization by 8 billion years. This is my bold guess. I guess that the second generation of starsThere is a possibility that terrestrial planets appeared in the early stages of emergence, but the possibility is very small, the possibility of life appearing is extremely small, and the possibility of evolving into civilization is even slimmer. Nevertheless, II still guess there will be a lucky one.

According to my assumptions, what level will the civilization that has been ahead of 8 billion years develop to?

In our impression, whether it is science fiction works or science fiction movies that we have seen, we have never seen a civilization that can develop for 8 billion years. In 1964, Soviet astrophysicist Nikolai Kardashov proposed aThis hypothesis is used to measure the technological level of civilization. He believes that the level of a civilization mainly depends on the energy and technology of the civilization. Energy is the major prerequisite for the development of technology and the major prerequisite for the progress of civilization. According to the path of human civilization, human beings firstThe energy used was only trees and coal, and later oil, natural gas, solar, wind, hydropower and nuclear power. With the improvement of energy level, civilization progresses, this is directly proportional.

According to the Kardashov index proposed by the astrophysicist, human civilization at this stage belongs to the basic type I civilization, and it is also the infancy of civilization, unable to fight against threats from outside the earth.The above are Type II and Type III civilizations, but even Type III civilization is far behind the development of 8 billion years of civilization. The representative feature of Type III civilization is that the civilization can use all the energy of the galaxy in which it is located. Type III civilization is the case.The strongest civilization in the Kardashov index, but if you put it in the "three-body world", it is just a younger brother, and the singer civilization can easily clean it up, just like cleaning up garbage.

Can a civilization of 8 billion years reach the level of a singer’s civilization? I think it won’t take so long at all. We can boldly imagine that in terms of the development speed of human civilization, we will give another 500 years to mankind.It is expected to have the level of leaving the solar system, let alone the level after 5,000 years, at least it should have the level across several star systems, what about 50,000 years from now? I think that the level of reaching the "Galactic Empire" isYes, 50 million years later, 500 million years later, 5 billion years later, simulating a universe should not be a problem, so if I want to guess, the top civilization of the universe can reach the level of simulating the universe.


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