The reconstruction of the ground is in full swing, and many large-scale factories that can only be built on the ground have begun to put into production, further accelerating the reconstruction of the civilization on the ground. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

In Noah's plan, after the surface environment is restored, a civilization will be established on the surface of the earth, with the federal space station as the transportation hub between the civilization and extraterrestrial planets, Mars and the moon as resource extraction and industrial production bases, and the asteroid belt as a mineral mining center.

When the civilization structure that includes the Earth, the Moon, Mars, and the asteroid belt is formed, it will begin to expand to other planets in the solar system.

As long as there is a certain amount of space to build, the size of the territory is meaningless to Noah, after all, Noah is not the previous human leader, and he does not need to worry about the living and living space of 18.8 billion human beings.

But the resources on other planets are things that Noah can't give up. Helium-3 and rare metals on the Moon, iron and copper on Mars, the near-endless deuterium and tritium on Jupiter and Saturn, and the undiscovered hidden resources of Uranus and Neptune more distant.

The measure of a civilization's technological level is not the territory of the civilization, but the total amount of resources that the civilization can use.

The Soviet astrophysicist Kadashev once proposed the Kadashev scale for the grading of civilizations.

[Type I Civilization]: Able to mobilize energy equivalent to the entire output power of the earth (about 10 to the 15th power ~ 16th power watts) for communication.

[Type II civilization]: Able to use the output power equivalent to a typical star (10 to the 26th power) for communication.

[Type III Civilization]: The power used for communication is up to 10 to the 36th power, which is approximately equal to the power output of the entire galaxy.

Later, the American astronomer Carl Sagan suggested that the three types of civilization could be divided into 10 subtypes according to the energy scale, that is, 10 to the 16th power of the tile is 1.0 type, 10 to the 17th power of the tile is 1.1 type, and 10 to the 18th power of the tile is 1.2 type.

The most glorious era of the earth's civilization was once defined as a Type 1.40 civilization form!

As far as the level of civilization rebuilt is concerned, it has only just reached the passing line of Type I civilization. Returning to the 1.40 civilization form is Noah's current goal.

When the reconstruction work has developed to this point, Noah's schedule is no longer only a simple reconstruction work, but also scientific research work.

A huge theoretical breakthrough at the end of the 21st century has made the entire civilization of the 22nd century a grand occasion of rapid development, and at the beginning of the 23rd century, the birth of the theory of great unification is undoubtedly another great breakthrough in basic theory, and this breakthrough is far more valuable than the breakthrough at the end of the 21st century.

With the help of the Grand Unified Theory and the scientific theorems derived from it, Noah can be sure that he will not encounter technological barriers until at least until he develops above the 1.70 civilization form. But the girl's ambition does not stop there, it only exists in the theory of type II civilization, or even type III civilization, that is the direction in which she should go.

Practice is the only criterion for testing the truth, and the progress of science and technology can lead to the development of production, and the development of production has further promoted the progress of science and technology.

Following the reconstruction of the ground, lunar development is also on the agenda.

The Moon is rich in mineral deposits, and it has been proven that there are more reserves of rare metals on the Moon than on Earth. There are three main types of rocks on the moon, the first is the lunar sea basalt, which is rich in iron and titanium; The second is plagioclase, which is rich in potassium, rare earths and phosphorus, and is mainly distributed in the lunar highlands; The third type is mainly breccia composed of 0.1~1 mm cuttings of rock chips. Moon rocks contain all the elements of the earth and about 60 kinds of minerals, of which 6 minerals are not found on the earth.

In addition to mineral resources, the amount of helium-3 in lunar soil is estimated at 715,000 tons. For every tonne of helium-3 extracted from lunar soil, about 6,300 tonnes of hydrogen, 70 tonnes of nitrogen and 1,600 tonnes of carbon are obtained.

The helium fusion carried out by deuterium and helium-3 can be used as an energy source for nuclear power plants, this fusion does not produce neutrons, is safe and pollution-free, and is an easily controlled nuclear fusion, which can not only be used in terrestrial nuclear power plants, but is especially suitable for astronautics.

After all, the moon is a sphere, when the resource mining team arrives on the far side of the moon, the whole moon will become Noah's information obstacle, in order to better develop the lunar resources, three satellites were sent to the lunar orbit, which stabilized the connection between Noah and the lunar expedition team, out of nostalgia for history, the three new satellites were named Tiangong, when the communication problem was solved, it was the arrival of the resource mining force.

Batches of operation robots walked down from the transport machine, this batch of operation robots is divided into resource exploration, resource exploitation, rock formation, blasting group, facility construction, transportation six large types, each type of operation robot belongs to a different model, the largest facility construction operation robot height can reach 20m, the smallest resource exploration robot is only one centimeter long.

Since there is no atmosphere on the lunar surface, aerodynamic vehicles such as helicopter jets are not suitable for the lunar surface, and shuttles and transport ships have become the most common vehicles on the lunar surface.

It is undoubtedly much easier to build on the surface of the moon than on the ground, because the gravity of the moon is only about one-sixth of that of the ground, and a large robot designed to lift up to 1,000 tons of objects on the ground can throw 1,000 tons of objects as baseballs on the surface of the moon.

This is also what actually happened, once a medium-sized construction operation robot malfunctioned, and threw out a piece of more than 10 tons of fine steel on the mechanical arm, just enough to reach the "first cosmic speed" on the lunar surface, Noah only sent a shuttle to find the piece of steel that had become a near-Earth satellite.

In addition to some necessary facilities, Noah also set the site of the construction of the first astronomical telescope of the new civilization on the surface of the moon, and the previous civilization due to the obstruction of the atmosphere, built large telescopes in satellite orbits, and connected to the ground base through radio waves, although this way can make the telescope avoid the interference of the atmosphere, but the communication between them is also easily disturbed by the flow of high-energy charged particles brought by the eruption of solar flares.

For unknown reasons, solar flares erupted unusually frequently in the past 100 years, which made Noah very worried, which proved that the sun may have entered the aging period in advance, and the solar exploration work has become imperative, and Noah has decided to start the solar exploration work after completing the development of the lunar surface.

As time passed, the lunar resource mining team delivered a large amount of resources to Noah, and lunar surface facilities sprung up one by one, the first of which was the construction of the Hubble-3 astronomical telescope.

Because Hubble-3 was built on the surface of the moon and supported by the moon's ground, the scale of the construction of the Hubble-3 telescope is far larger than that of Hubble-2, which previously discovered the threat of gamma-ray bursts.

Noah also has a special feeling for the starry sky, that is, how much has this vast sea of stars changed the path between himself and human civilization?

Just when Noah was full of confidence in the future of civilization, such a message suddenly came from the Lunar Hubble 3 Astronomical Telescope Base, which had just completed construction.

A comet with a mass of more than 500 megatons and a core surface area equal to about 1,000 square kilometers is moving at Mach 95 (Mach is generally considered to be equivalent to 340.3 m/s, and the Mach value varies slightly with air pressure and temperature, which is considered in this article to be equal to the speed at which sound travels through the air at 15 degrees Celsius). ) through Neptune's orbit towards the Earth.

As a result of the pre-calculation, the trajectory of the two coincides, and the comet will hit the central part of the South Pacific Ocean.

If you don't find a suitable way to deal with it, Noah's life with the earth will be less than 5 years left.