Super technology leader

In the half-century following the end of the first manned lunar landing mission, human science and technology have developed rapidly.

However, compared to the rapid development of Internet technology, the progress in aerospace technology does not seem as great as previously imagined. It wasn't until later that people realized humanity's future was not on Earth but still in space, that humans once again began to value the development of aerospace technology.

Today, humans are not only planning to return to the moon and land on Mars, but also planning to build a "space base" on the moon, and in the future, use the moon as a "stepping stone" to travel to other planets.

This is not just the idea of one country; several national space agencies and even private space companies have similar plans.

It wasn't the right time before, but now is the right time.

Not to mention there are four living aliens trying to hook up with people on Mars every day.

However, many plans seem beautiful, but leaving Earth to live on the moon is not an easy task.

The moon is not as habitable as Earth, and because the moon has no atmosphere or magnetic field, the radiation on the lunar surface is very terrible. Therefore, if you want to immigrate to the moon, you must first deal with the lunar radiation, otherwise it is no different from "moths flying into the flame."

Where does lunar radiation come from?

In fact, we on Earth are also constantly exposed to radiation, but because the Earth has a magnetic field and atmosphere, most of the space radiation is blocked, so the Earth's climate environment becomes more comfortable and safe.

However, apart from Earth, other terrestrial planets are hard to say, but beyond that, the cosmic environment is generally very terrible, because the universe is constantly filled with various super-strong radiations.

Taking the solar system as an example, the various radiations in the solar system mainly come from the various energies released by solar activity, the most terrible of which is the solar storm.

Even on Earth, when solar storms are very strong, the ground will be interfered with, and slightly more vulnerable communication systems can be destroyed immediately.

Therefore, the radiation on the moon next to the Earth is also related to solar storms.

Because the moon is a vacuum environment and is very close to the sun, solar storms on the moon are much more terrible than on Earth.

After about a year of lunar surface radiation detection, Tianxia's Chang'e-4 probe found that space radiation on the moon is 200 times that of Earth.

Astronauts wear thick extravehicular spacesuits when performing extravehicular activities in low Earth orbit, let alone on the moon.

These extravehicular spacesuits are not ordinary clothing fabrics; they are carefully designed protective suits, mainly to protect astronauts and isolate them from space radiation.

Even so, after the American astronauts who landed on the moon back then returned to Earth, they found that huge amounts of radiation still caused a lot of irreversible damage to their bodies.

Therefore, if you want to build a space base on the moon, you must first find a way to deal with the super-strong radiation on the moon, otherwise everything is empty talk.

In the beginning, people didn't have any good solutions. Later, scientists discovered that there are many lava tubes under the moon, and these lava tubes can be used to build human bases. Because they are located under the lunar surface, they can help humans isolate most of the lunar radiation.

If you can't find suitable lava tubes, other cliffs, canyons, or caves will also work, as long as you can avoid solar winds from directly sweeping over the human base.

If it is really not suitable, for example, if you find a "windbreak" place, but that place is not well located, does not have enough solar energy, or has enough solar energy but not enough water resources, then you can only "artificially" create cliffs and canyons in places with sufficient solar energy and water resources to "block the wind."

At the same time, researchers also pointed out that even if the space base built by humans on the moon is safe, they can only live on it continuously for about 6 months at most, otherwise the amount of radiation the human body is exposed to will still exceed the standard.

After suffering from radiation sickness, the risk of cancer in various parts of the body will also increase sharply.

When human cells and DNA are killed and destroyed by radiation, it is almost impossible to return to health.

There is no way, after all, the moon is not Earth. It has no magnetic field or atmospheric protection, and the human body is... indeed not suitable for survival in space.

The cooperation between Tianxia and Navigator this time for manned lunar landing, as well as the later permanent residence plan, is to use the "artificial lunar soil protection layer" method to improve the radiation protection capabilities of the base in places with sufficient energy and water resources.

The artificial lunar soil protection layer is not just the sandbag stacking method they are using this time. There are many ways available, but they are just taking a shortcut this time.

Other companies focus sunlight or spontaneously emit strong light to sinter lunar soil, and then form lunar bricks or regular lunar soil stones, and then use them to build protective walls around the shelter.

However, this process takes too long, taking 5 hours to make a brick.

And the strength of this brick is only one-fifth of that of concrete, which can be compared to... gypsum.

There are also those that are not sintered into bricks, but directly use a certain adhesive to bond the lunar soil, and then use automatic robots to build shelters like ants building nests.

However, this method still takes too long, not the bonding time is long, but the automatic robot moves too slowly.

At the same time, the adhesive requires a lot of water, and the problem of water must also be solved.

Compared to these plans, filling sandbags is definitely the simplest and most brutal method.

The four astronauts entered the cargo hold of Moon Palace II and took out shovels, as well as sandbags made of special materials.

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This kind of sandbag is not an ordinary sandbag. Its basic material has very good toughness. It not only has a certain protective effect against micrometeorite attacks, but also has some resistance to space radiation. In addition, the lunar soil filled inside makes the resistance to impact and radiation even better.

The flexible joints of the hard spacesuit can ensure the work efficiency of the four astronauts, and the simulated lunar training in the illusion space can make them very adapted to the gravity of the moon, so that the movements will not be deformed too much.

They worked in groups of two, one holding the bag and the other using a shovel to fill it with soil.

After filling a bag, the zipper on the bag mouth is pulled to complete the sealing.

After sealing, they are not in a hurry to transport them, but throw them aside. After they have collected a dozen or twenty bags, they transport them to Moon Palace II and stack them according to the plan.

Those plans take 5 hours to make a brick, and they have already piled up the sandbag foundation in 5 hours.

After 5 hours, their first job on the moon came to an end. It was time to rest and eat. After eating, they had to slightly modify the lunar rover and then look for water.

Although their supplies are enough for three months, they do not need to drink water from the moon for the time being, but the water on the moon is not only for drinking.

Water on the moon represents everything.

Water on the moon is "oil". It can "refuel" humans, "refuel" plants, and "refuel" spaceships.

Let’s not talk about the first two uses for now. The use of lunar water that humans dream of is to mine ice to electrolyze and obtain fuel, and then provide fuel for spaceships.

The low gravity of the moon means that the orbital conditions are extremely low, so providing supplies from the moon to long-distance space travel vehicles is cheaper than replenishing them on Earth.

Taking a round-trip mission to the moon as an example, if you refuel on the moon once, the cost is only one-fiftieth of the cost of refueling and returning on Earth.

In the future, the "reuse" capability of spacecraft will become standard, so the biggest expenses for launching will be maintenance and fuel. If the fuel cost is reduced to one-fiftieth, it will be a revolutionary impact.

Chapter 2 11:30