What's so special about "Galaxy Civilization" as a third-level civilization?

Through research, it is found that the earth civilization has survived for more than 200,000 years. Compared with the cosmic history of 654.38+03.7 billion years, it is simply a drop in the ocean. However, people on the earth overcame all kinds of difficulties and left footprints on the earth. Physicists and other scientists have promoted the development of civilization and achieved goals that were once considered impossible. About 150 years, human civilization has developed to the point where it can fly away from the earth, set foot on the moon and explore Mars. The development of human beings can be described as incredible and inspiring, but measured by the cosmic scale, human civilization seems to be still in its infancy.

1964, astronomers put forward the method of mixing civilization grades, that is, the scientific and technological level of civilization depends on the energy generated by civilization, and it can be divided into three grades according to the grade division. The first is the first level: the first level can use the available resources of the planet, but the earth has not yet reached the level of using the energy of the planet. According to scientists' calculations, human civilization is currently at 0.73.

Although the earth has a population of more than 7 billion, it can explore the moon, send probes into space and maybe immigrate to Mars, but human civilization is still backward. Some physicists claim that human beings may successfully upgrade to the first level in the next hundred years or so, and it will take thousands of years to reach the second level. If they continue to develop, they may reach the third level after 654.38 million years. Therefore, in the future, mankind will move towards a first-class civilization. At that time, we first-rate civilizations could control the earth and change the weather, the composition of the earth and other related factors.

However, compared with the second level, the first level civilization is still in a backward stage. The second level: a civilization that can use the energy of its own stars, wrap stars like the sun in some kind of sphere, and make full use of the energy it sells.

Level 3: Also known as Galactic Civilization, Galactic Civilization can control the energy of its own galaxy, similar to the operation of Level 2, controlling hundreds of millions of stars.