Chapter 261

In the fifth year of the dust era, Xu zhe led the army to fight against the areas occupied by zombies. The war lasted for seven months, and finally ended with the victory of the military led by Xu Zhe. Those zombies living in the dark covered the leader LV Fang's retreat to the former Nordic countries of Norway, Sweden and Finland, becoming a "marginal human" wandering at the end of the world.

In the third year of the dust era, Zhang Diandian was promoted to be Xu Zhe's personal guard and secretary, giving full play to his omnipotent acoustic communication ability and helping Xu zhe get the first opportunity in military communication.

The large area of land recovered in this world war has once again become a base for the revival of human civilization. The following year, Xu zhe concentrated all the remaining scientists to establish several large-scale physical research centers in the European continent, concentrated on the development of space navigation technology, and resumed satellite launch in only three months. Six months later, Breakthroughs have been made in scientific research projects focusing on new fuel research, and breakthroughs have been made in the research and development of controllable nuclear energy. For the first time, mankind has successfully increased the autonomous flight speed of spacecraft to one thousandth of the speed of light, that is, 300 kilometers per second, which has initially laid the foundation for the development of demon civilization

However, this is still one order of magnitude less than the scientific and technological capability of one percent of the speed of light of the blood moon civilization.

On the premise of the rapid development of space and aerospace technology, Wang Yanke, director general of the Ministry of science and technology and nicknamed "human think tank", submitted a proposal for the "star picking project" based on the theoretical assumption of head of state Xu Zhe's "rebuilding the moon". Mankind urgently needs to comprehensively restore the stable climate and geomagnetic conditions in the past, so as to try to reduce the impact of the loss of the moon on the whole human civilization, Only by re stabilizing the deflection of the earth's central axis with a new gravitational source can we ensure the sustainable development of earth civilization.

But the problem is - relying on the current human ability, it is impossible to make a celestial body as large as the moon!

The most basic point: you must have at least so much material piled up. It is obviously unrealistic to dig a piece of the earth and launch it into space. Can you imagine launching 10 Himalayas into space with thrusters?

There are only two ways left. The first is to use the lunar fragments around the earth to gather to form a new moon, use local materials, collect meteorite groups and put them into lunar orbit again. Although it is feasible, if hundreds of millions of meteorite fragments are processed one by one, it will cost manpower and material resources, not to mention the long construction period, It's like building a house with bricks and building a planet the size of the moon. It will take at least 1000 years

If this method doesn't work, there is only another way - using the current navigation ability of human beings in the inner space of the solar system, capture a meteorite roughly equivalent to the mass of the moon within the scope of the nine planets, enter the earth's orbit and become a new moon.

It's not good to build a new house in space. It's better to find an old house nearby and move it directly! Anyway, it doesn't pay attention to the style. It's basically round. What needs to be considered in this plan is the volume, mass and gravitational strength of the meteorite, as well as the current distance from the earth.

However, after two years of implementation, in the eighth year of the dust era, the plan was finally shelved due to the lack of material and energy and the slow development of aerospace technology. Mankind clearly realized that it had not mastered the energy level that could change the orbit of such a huge celestial body.

On the other hand, space exploration technology is also developing rapidly. Under the guidance of Xu Zhe, Hao Zhi led a group of scientists to establish a huge radio telescope array - "the pupil of the world" in North Africa. Because Hao Zhi had captured dreams about fleet invasion in the memory of the blood moon people before, coupled with his strong spatial positioning intuition after the recovery of his power, he effectively helped the "pupil of the world" Locked a general search direction.

Those radio telescope arrays with unprecedented scale observed the deep space of the universe day and night, and finally determined the conjecture in Hao Zhi's dream one morning half a year later!

They captured a huge energy turbulence one light-year away. The engine of a fleet was decelerating, maintaining 1% of the speed of light and rushing towards the earth. If calculated according to this constant speed, the time was determined - the remaining 49 blood moon spacecraft fleet arrived at the earth about 100 years later

Hao Zhi immediately reported the news to the head of state Xu Zhe. After listening to all the reports, he sat in his position for a long time before slowly saying, "God has only left us a century, too short..."

Then, Xu zhe stood up and looked at the busy world outside through the window. Human beings are already doing their best to work. Everyone works like a winding machine. However, the speed of civilization revival is so slow.

Hao Zhi doesn't know what to say. Recently, the head of state has added a lot of white hair to his temples and smoked more and more.

"Fuhrer, according to your plan, it will take us 50 years to rebuild the moon just as the first step. If we want to reach the stage of establishing a colonial strategic base and forming an interstellar defense network in the solar system, it seems that time is not enough at present..." Wang Yanke whispered.

Yes... Xu zhe didn't speak for a long time. Sometimes he seemed to say to himself that just interstellar defense is not enough. If we want to escape this doomsday attack, we must at least develop to the scale of interstellar aircraft carrier warships, and such a goal is really an impossible task!

Maybe I was too optimistic. At the beginning, I was wrong

"You were wrong!" outside the door, a loud voice bumped in. It was Lin Tao, the director of the biology department, followed by Lele, the head of the biology department. "If you want to escape this crisis, you can only rely on the way I said..."