Bright Sword starts with the grenade flat.

Chapter 413 Blue Star Ecological Restoration Plan

As for what species preservation is, it is naturally to arrange all the animals and plants produced on land in a zoo near the underground city with their own characteristics.

For example, tigers, lions, giraffes, elephants and other animals are arranged in pairs in the zoo in the underground city.

As for plants, in addition to preserving a large number of seeds, a large number of living things are also preserved in various underground cities.

Therefore, as long as the surface temperature can return to its previous state, the ecological environment of the Blue Planet can be restored immediately with the large-scale planting of plants.

But after returning to the study, Liu Xiu did a quick calculation and found that a lot of energy was needed to raise the temperature of the blue planet to the temperature before it left the sun.

Because the surface area of ​​the Blue Planet is 510 million square kilometers, even if we calculate based on the illuminated area of ​​250 million square kilometers, the light intensity that the Blue Planet received when it was in its original orbit was one kilowatt per square meter per hour.

Therefore, with such light intensity, one million kilowatt-hours of light is naturally required per square kilometer. That is to say, if the photoelectric conversion efficiency of the light bulb used is 100%, then one million kilowatt-hours of electricity will be required to illuminate an area of ​​one square kilometer.

If you want to illuminate half of the blue planet like the sun, you will need 250 trillion kilowatt-hours of electricity per hour.

Two hundred and fifty trillion kilowatt-hours of electricity may seem like just a bunch of numbers, not a lot. After all, the energy released by that star-destroying laser cannon the day before yesterday was much more than this.

But if it were placed in the world before Liu Xiu traveled through time, it would be equivalent to the power generation of 10 million Shanxia Hydropower Stations in one hour!
After just a quick thought, Liu Xiu felt that the plan was feasible, so he convened the think tank of Wandering Blue Star the next day. Of course, the most important members of Liu Lang Blue Star's think tank were naturally Li Yiyi, Liu Qi and Tu Hengyu, three old acquaintances.

After gathering the think tank members in the conference room, Liu Xiu took out his general plan and began to explain it to the think tank members:

"Everyone, I called you all here today to talk about the future development of our Wandering Blue Planet, especially the development of the ecological environment. I believe everyone knows that the observatory no longer recommends that we dock the Wandering Blue Planet on the lifeline of a star.

Because if a large object like the Wandering Blue Planet were to enter a star system without warning, it would break the original gravitational position, and it might be like the last Jupiter crisis! Therefore, I decided to use a self-luminous source to restore the light of the Wandering Blue Planet without relying on the light source of stars. If you have any opinions or suggestions, please feel free to raise them. We will discuss and simulate it later if it works!"

As for Liu Xiu's speech, the think tank was silent for a while, and the first person to raise his hand to answer was Li Yiyi. Li Yiyi stood up and said to Liu Xiu:
"Captain, I just roughly calculated that if we want to use the method of self-luminous source to restore the ecology of Blue Planet, it will require at least 250 trillion kilowatt-hours of electricity! So I suggest that we can conduct small-scale pilot projects from time to time and build an ecological environment similar to a greenhouse on the surface! After all, although we now have more than 6 billion people, if we live in densely populated areas, we only need an area of ​​1 million square kilometers to realize the previous surface life!"

Liu Xiu agreed with Li Yiyi's idea. After all, building a greenhouse of one million square kilometers is actually easier than restoring the entire blue planet to its previous state.

Whether it is power consumption or other aspects, it is relatively easy, but another problem is how to build it. After all, the material consumption of building a greenhouse of one million square kilometers is an astronomical figure.

This was not only what Liu Xiu thought of, but also what Tu Hengyu thought of. So Tu Hengyu, who was devoted to artificial intelligence, said:

"In fact, building an artificial little sun is the best option. We can build a large spaceship, and then install a huge nuclear reactor on the spaceship, and then control the spaceship to fly around Liu Xiu Blue Star in the manner of a satellite, providing the Wandering Blue Star with a steady supply of light energy, thereby heating the surface of the Wandering Blue Star and restoring the Wandering Blue Star to its previous temperature!" After Liu Xiu heard Tu Hengyu's plan, he was also excited, because if Tu Hengyu's artificial little sun is successful, then the ecological environment on the Wandering Blue Star will be completely restored to the level before the wandering.

The frozen seas and ice fields will return to their previous state, but compared to Li Yiyi's greenhouse plan, Tu Hengyu's artificial sun plan requires more resources, and there is no way to utilize the remaining energy of the planetary engine.

After all, the cost of building an artificial solar spacecraft that can replace the sun would certainly be huge.

Therefore, Liu Xiu had to choose between using artificial sun to fully restore the ecology of the blue planet, or using artificial greenhouses to restore the ecology of the blue planet on a small scale. This became a difficult choice.

So at this time Liu Xiu naturally turned his gaze to Liu Qi and asked Liu Qi:
"What do you think, Liu Qi? Which of Tu Hengyu's and Li Yiyi's plans do you prefer?"

After hearing Liu Xiu's question, Liu Qi thought for a moment and said:

"Of these two plans, I actually prefer Li Yiyi's greenhouse plan, because I just thought about it and found that Li Yiyi's greenhouse construction plan is not difficult, and can even be said to be simple. As for Tu Hengyu's artificial sun plan, it is not difficult for us to build a giant spaceship that can serve as an artificial sun. However, the artificial sun plan has a fatal flaw!"

Tu Hengyu, who was standing by, was stunned when he heard Liu Qi's words, and then asked:
"Fatal flaw, what is the fatal flaw? Can you tell me more specifically?"

In response to Tu Hengyu's curiosity, Liu Qi said:

"The fatal flaw is that the giant spacecraft cannot provide energy when traveling at superluminal speeds, that is, when the Wandering Blue Planet enters the curvature navigation state! So once the Wandering Blue Planet enters the curvature navigation state, the previously restored ecosystem will have to be completely abandoned!"

Liu Qi's words also made Liu Xiu understand the shortcomings of the artificial sun. That's right, the artificial sun must be at least one thousand kilometers away from the Wandering Blue Planet. At this altitude, the curvature field generated by the Wandering Blue Planet cannot cover the artificial sun spacecraft.

Therefore, this means that every time a wandering blue planet enters superluminal navigation, its ecological recovery space will be completely wasted.

Naturally, there is no need to worry about this problem with the greenhouse solution, because the greenhouse will leave with the wandering blue star.

Therefore, even if the Wandering Blue Planet encounters a powerful alien civilization, its fleet can easily take it away.

And Liu Xiu had just heard Liu Qi say that the construction of Li Yiyi's greenhouse was very simple, so he asked Liu Qi:
"You just said that greenhouses are easy to manufacture. What is the simple method? How high is the construction of greenhouses? And how much does it cost on average to build one square kilometer of area?"

(End of this chapter)