In the half century after the end of the first manned moon landing mission, human science and technology have developed very rapidly.

However, compared with the rapidly developing Internet technology, the progress in aerospace technology seems to be not as great as before. It was not until people realized that the future of mankind is not on earth, but still in space that human beings once again paid attention to the development of aerospace technology.

Today's humans not only plan to return to the moon and land on Mars, but also plan to build a "space base" on the moon, and use the moon as a "springboard" to go to other planets in the future.

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

It was not the time before, but now it is the time.

Not to mention that there are four living aliens who hook up on Mars every day.

It’s just that many plans seem beautiful, but leaving the earth and going to live on the moon is not easy.

The moon is not as livable as the earth, and since the moon has no atmosphere and magnetic field, the radiation on the moon's surface is very terrible. Therefore, if you want to immigrate to the moon, you must first deal with the moon's radiation, otherwise it would be like "moths to the flames".

Where does the moon's radiation come from?

In fact, we are always in radiation on the earth, but because the earth has a magnetic field and atmosphere, most of the space radiation is isolated, so that the earth's climate environment will become more comfortable and safe.

But besides the Earth, it is hard to say about other Earth-like planets, but apart from that, the universe is generally very terrifying, because the universe is filled with all kinds of super-strong radiation at all times.

Take the solar system as an example. The various types of radiation in the solar system mainly come from various energy released by solar activities, and the most terrifying one is the solar storm.

Even on Earth, when the solar storm is very strong, the ground will be disturbed, and a slightly fragile communication system will immediately bring you a boost.

So the radiation on the moon next to the earth is also related to solar storms.

Since the moon is a vacuum environment and is very close to the sun, the solar storm on the moon is much scarier than the earth.

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

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

These extra-cabin spacesuits are not ordinary clothing fabrics. They are carefully designed protective clothing, mainly to protect astronauts and use them to isolate space radiation.

Even so, when the Meriken astronauts who landed on the moon returned to Earth, they found that the huge amount 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 will be empty talk.

At the beginning, people had no good idea. Later, scientists discovered that there were many lava tubes underground on the moon. These lava tubes could be used to build human bases. Because they were under the surface of the moon, they could help humans isolate most of the lunar radiation.

If you can't find a suitable lava tube, other cliffs, canyons or caves are fine, as long as the solar wind can be prevented from directly sweeping across the human base.

If it is really inappropriate, such as finding a place to "block the wind", but the location is not good, there is not enough solar energy, or there is sufficient solar energy, but there is not enough water resources, then it can only be "man-made" cliff canyons to "block the wind" in places with sufficient solar energy and water resources.

At the same time, researchers also pointed out that no matter how safe the space base built by humans on the moon, they can only live on it for about 6 months at most, otherwise the amount of radiation the human body will still bear will exceed the standard.

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

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

There is no way to do this. After all, the moon is not the earth. It has no magnetic field and atmospheric protection, and the human body... is indeed not suitable for survival in space.

Tianxia and Pilot's cooperation with manned moon landing, as well as the later permanent plan, is to use the "artificial lunar soil protective layer" method to improve the radiation protection capabilities of the base in places with sufficient energy and water resources.

The artificial lunar soil protective layer is not just the sandbag pile method they used this time, but there are still many ways to use it, but they took advantage of it this time.

Other companies have focused on sunlight or spontaneously strong light to sinter the lunar soil, then form lunar bricks or regular lunar soil stones, and then use them to build protective walls around the protection site.

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

And the strength of this kind of brick is only one fifth of that of concrete, which is comparable to... gypsum.

There are also those that do not sinter into bricks, but directly use some kind of adhesive to bond the lunar soil, and then use automatic robots to build protective centers like ants building nests.

However, the process of this method takes too long, not because of the long bonding time, but because the automatic robot moves too slowly.

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

Compared with these plans, filling sandbags is definitely the easiest and most rude way.

Four astronauts entered the warehouse of Moon Palace 2 and took out shovels and sandbags made of special materials.

This kind of sandbag is not an ordinary sandbag. Its basic material is very tough. It not only has a certain protective effect on micrometeorite attacks, but also has some resistance to space radiation. In addition, the lunar soil filled inside it has a higher effect on its resistance to impact and radiation.

The flexible joints of the hard spacesuit can ensure the work efficiency of the four astronauts. The simulated moon training in illusion space can make them very adapted to the gravity of the moon so that they will not deform too much when doing movements.

They were in groups of two or two, one of them holding a pocket, and the other was holding a shovel to fill the soil.

After packing a bag, the zipper at the pocket was pulled and the seal was completed.

After the sealing was completed, they did not rush to transport it, but threw it aside. After getting more than ten or twenty bags, they transported it to the next door to Moon Palace No. 2 according to the plan.

Those who planned to make a brick in 5 hours, but they had already piled up the foundations of the sandbags in 5 hours.

Five hours later, their first work on the moon came to an end. It was time to take a break and have a meal. After the meal, they had to slightly modify the lunar rover and then look for water.

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

Water on the moon represents everything.

The water on the moon is "oil". It can "fuel" humans, plants, or spaceships.

Not to mention the first two uses, just digging ice cubes for electrolysis to obtain fuel, and then providing fuel to spacecraft is the use of lunar water that humans dream of.

The moon's low gravity means that the entry into orbit conditions are extremely low, so providing supplies to long-distance space travel vehicles from the moon is cheaper than supplying them on Earth.

Take a mission to travel to the moon as an example. If you add fuel to the moon once, the cost will be only one fifty of the round trip of the fuel on the earth.

In the future, the "reuse" capability of spacecraft will become the standard configuration, so the majority of the launch cost will be maintenance and fuel. If the fuel fee is reduced to one fifty, it will be a subversive impact.
Chapter completed!