After 2400 years, with the continuous expansion of the living space of the earth's civilization, the integration of internal resources, the enhancement of the quality of individual citizens, the development of science and technology, the most cutting-edge industrial products of the earth's civilization, the performance of faster-than-light spacecraft is getting better and better.

Although with the gradual improvement of the manufacturing process of faster-than-light spaceships, the maximum flight speed of spaceships is gradually becoming more and more difficult, but as the earth's civilization is becoming more and more sophisticated in the manufacture of faster-than-light spaceships, the general trend is that the flight speed of spaceships is increasing rapidly.

Even the cargo starship with the lowest flight efficiency, the maximum flight speed of its spacecraft has been slowly increased on the basis of 3 times the speed of light, reaching the latest level of four times the speed of light, and the flight speed of the high-end passenger faster-than-light spaceship with the fastest flight speed has been increased from 6 times the speed of light to the latest standard of 7.5 times the speed of light in the earth civilization, except for military spaceships.

Compared with the improvement of the maximum flight speed of various types of spacecraft, one of the indicators that the Earth civilization has performed better in improving the comprehensive flight ability of the spacecraft is to greatly improve the continuous flight ability of each spacecraft.

The maximum cruise time of the faster-than-light cargo spacecraft has been increased from the previous 2 years to the current 5 years, and the maintenance work of the cargo spacecraft after completing the long-distance cruise flight has been simplified to the level of only 2 months, which alone can be said to have more than doubled the flight efficiency of the spacecraft.

In the past, even if the earth's cargo spacecraft was at the closest destination to the solar system, on the route to the giant beast planet, it had to be grounded and maintained several times, which greatly delayed the flight efficiency of the spacecraft and seriously delayed the time for the cargo to reach the giant beast planet.

And now, 20 light years away, the latest cargo spaceship, if lucky, even do not need to do a halfway maintenance work, until after arriving at the planet of the giant beast, in the well-equipped space dock of the planet of the giant planet for maintenance, even 2 months of time, can complete the cargo preparation and spacecraft maintenance before the return, which is simply doubled to improve the efficiency of cargo exchanges between planets.

As for the immigration efficiency of the immigration spacecraft, the passenger carrying efficiency of the high-end passenger spacecraft has more than doubled.

In this way, invisibly, the radius of the earth's civilization has once again been greatly increased.

It can be said that with the gradual improvement and improvement of the design and construction system of faster-than-light spacecraft, the earth's civilization has entered a period of rapid prosperity and development for a long time.

During this period, the earth's civilization gradually set foot in more and more surrounding star fields with the increasing flight efficiency of faster-than-light spaceships.

More and more star systems began to spread the footprints of earthlings, more and more natural ecological stars began to migrate the human races on the earth, and the boundaries of the earth's civilization gradually expanded from 30 light-years around the solar system to 40 light-years and 50 light-years, and even a large number of interstellar immigrants immigrated to farther places.

The number of ecological stars possessed by the earth's civilization has gradually increased from ten to twenty or thirty, and finally expanded to more than one hundred.

I think that it took more than 200 years for the earth civilization to finally obtain the first extraterrestrial natural ecological planet from the time when the earth civilization went out of the earth.

It took more than 100 years for the earth to develop from an extraterrestrial planet to 10 extraterrestrial planets, but now, it only took more than 100 years for the earth's civilization to complete from having 10 extraterrestrial ecological planets to having more than 100 extraterrestrial planets.

It can be said that in recent years, the development of the earth's civilization has always shown a trend of accelerated development, and the speed of development has become faster and faster.

By the present day of 2500 years, the total population of the earth's civilization has even reached the 1,000 billion population mark, and in this hundred years of rapid growth of the planet and the continuous growth of the population, in just a hundred years, the total population of the earth has more than doubled, which is 2.5 times the total population of the earth's civilization in 2400 years.

This is largely due to the extreme expanse of the earth's living space.

With the earth's civilization involved in more and more extensive interstellar space-time, more and more planets have been included in the control of the earth's civilization, the number of people carried by each planet is invisibly diluted by the new land area, and with the continuous development of the earth's scientific and technological level, the per capita labor efficiency continues to improve, and the number of resources owned by each earth's citizens is constantly increasing, which greatly stimulates the earth's enthusiasm for childbirth, because in the current era, giving birth to children is not only not dangerous and painful, but also the burden of child raising and education can be said to be unprecedentedly reduced, facing a vast space for development, The desire to reproduce on the whole earth has been stimulated, and it is common for a couple to have two or three pairs of children in a lifetime, that is, there are many people who have a football team for two people, which of course greatly increases the number of people on the earth.

In addition, the neonatal mortality rate on the earth has been greatly reduced, the average life expectancy has been greatly improved, the elderly in their 100s are simply commonplace, the average life expectancy has increased to 150 years old, that is, the number of masters in their 200s has greatly increased, and the population of the entire earth has broken through to the level of 1 trillion yuan, which is naturally not an inconceivable thing.

It can be said that this is entirely the result of logical development.

In this way, the current growth rate of the earth's population is still affected by the large delay in the adult limit of the population, otherwise, it is not too uncommon for the population to increase by one and a half times.

It can be said that with the continuous accumulation of resources and the continuous improvement of the quality level of the population, the earth civilization has made great breakthroughs and progress in all fields, and the development of science and technology is far more than just the improvement of the field of faster-than-light spaceship...... Although the development of this field is still the core and main driving force of the earth's development.

In the previous few hundred years, the only main theme of the earth's civilization can be said to be used in the development of the faster-than-light spacecraft technology system, in the early days, the earth was still trapped in the solar system, it can be said that the most important survival base is only the planet of the earth, and in order to develop the fastest to the era of interstellar civilization, the earth government forcibly promoted population growth, put a huge amount of resources into the research of the faster-than-light spacecraft technology system, and maximized the population to be bound to various industrial positions, that long for two hundred years, the total population of the earth once grew to a scale of more than 100 billion, which caused great survival pressure to everyone。

Just imagine, a small earth, heaven and earth, a total of more than 100 billion people live, the whole earth is about to burst, and the earth, as the only survival base of human beings on the earth, has never had such a large number of people, how many years, I don't know how many citizens of the earth are living in trembling, lest they wake up, they will usher in an unprecedented ecological disaster, and the earth human beings have ushered in the biggest survival disaster since the beginning of civilization.

Fortunately, after more than 200 years of development, the earth civilization has finally survived, successfully built a faster-than-light spacecraft production system, produced one after another faster-than-light spaceships, and opened up one new living base and new ecological planet in the outer galaxy, and after more than 100 years of development, it has more than ten natural ecological planets.

For a considerable part of the earth's human beings, it seems that it was not until such an era that they finally came out of the existential crisis, and the earth's civilization as an interstellar civilization really gained a firm foothold and had real confidence.

It can be said that in the years before 2400, the earth civilization, as an interstellar civilization, has always only reached the era of interstellar civilization, and its head is still stuck in the old era and cannot extricate itself. It was not until 2400 years later that the earth civilization made great strides forward, and the civilization entered an unprecedented red age, unprecedented prosperity, and because of the large surge in the total population of the earth, a large number of people were separated from the front-line production system, and the earth civilization really began to enter the mentality that an interstellar civilization should have.

Unprecedented pride, pride, and self-confidence erupted, and the earth's civilization began to gradually build up the self-confidence of civilization.

The fact that a large number of people have been separated from industrial jobs has not reduced the overall strength of the earth's civilization, on the contrary, the overall strength of the earth's civilization has been greatly enhanced.

For some time before, a large proportion of the elite population of the earth's civilization was concentrated in the fields of industrial manufacturing and scientific research, and the most important elite population of the earth's population was almost revolving around the faster-than-light spaceship, which was not the population distribution that normal interstellar civilization should have.

Although the superluminal spaceship is the most core and important key element for the interstellar civilization, after all, the superluminal spaceship is only the skeleton of the interstellar civilization, for a qualified and powerful interstellar civilization, how to give birth to powerful muscles, sensitive nerves, deep and intelligent brains, digestive and vital internal organs on this skeleton, this is also an extremely critical link, and it is also the core element that directly affects the ultimate fate of civilization.

It is not that the people at the helm of the earth's civilization are unaware of this, nor do they know that the industrial population is the key to the development of civilization, but it should never be the only one.

However, for a long time, the population of the earth's civilization is too small, and it is necessary to vigorously reduce the number of people in other links, and at the same time ensure the number of industrial population, appropriately adjust the number of other people, so as to maximize the earth's civilization to the era of interstellar civilization.

That is to say, the earth civilization has a fairly strong core government, has a powerful coercive leading force, and has been guided by the government-led civilization development blueprint for a long time, and finally stumbled and pulled the earth civilization to the height of the interstellar era.

In fact, after the establishment of an industrial system with a complete faster-than-light spaceship production system as the core, and the expansion of the territory of the earth's civilization to the alien galaxy, the direction of civilization development led by the nationalization of the central government of the earth's civilization has been gradually liberalized, giving more and more private individuals, The development space of enterprises is also beginning to gradually reduce the proportion of the number and scale of the industrial population, but even in terms of the population growth of the earth's civilization, if you want to really fill the population vacuum outside the industrial population, it is not something that can be completed overnight.

After more than 100 years of development, the earth's civilization gradually developed a corresponding number of people, and gradually succeeded in filling the gap of industrial population in addition to the industrial population.

In the past 100 years, the interior of the earth's civilization has undergone tremendous demographic changes, and a large number of human resources have filled the industrial vacuum formed in the past few hundred years.

In addition to the development of the industrial field, the cultural industry, the entertainment industry, the ideological field, the service industry, and various industry categories have formed a great development, and the peripheral technologies developed in some core industrial industries have begun to be applied in the entire social system on a real scale.

It can be said that in the past few years, the earth's civilization has gradually and slowly become plump from a stunted, skinny but tall bamboo pole, with countless changes from the inside out.

At the same time, many of the problems that exist in the legal system, education system, and other fields that have been stagnant for many years have been slowly remedied.

For example, the new standard of human adulthood on Earth has changed very differently from before.

Because of the extension of the life limit of human beings on the earth, and also because of the great expansion of human knowledge system, and the great extension of learning time, the formal adulthood time of human beings on the earth has been greatly extended, to the age of 30 years old. Most of them only slowly start to leave school, marry and have children after that.

It can be said that this kind of universal lagging development of fertility time has to a large extent stopped the rapid explosion of the earth's population, otherwise, no one can imagine how much the earth's population will change now. (To be continued.) )