Super technology leader

In the half-century since the end of the first wave of manned missions to the moon, human science and technology have developed very rapidly.

It’s just that compared to the rapid development of Internet technology, the progress in space technology seems not as great as previously imagined. It was not until later that people realized that the future of mankind is not on the earth, but still in space, that mankind again paid attention to the development of space technology .

Today, human beings 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 way a country thinks. Several national space agencies and even private space companies have similar plans.

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

Not to mention there are four living aliens hooking up on Mars every day.

It’s just that many plans seem very good, but leaving the earth to live on the moon is not an easy task.

The moon is not as livable as the earth, and because the moon does not have an atmosphere and magnetic field, the radiation on the moon's surface is very terrible. Therefore, if you want to emigrate to the moon, you must first get the lunar radiation, otherwise it is tantamount to "moths to fire".

Where does the lunar radiation come from?

In fact, we are also exposed to radiation all the time 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 apart from the earth, other terrestrial planets are hard to say, but apart from that, the universe environment is generally very terrifying, because the universe is flooded with super-strong radiation all the time.

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

Even on the earth, when the solar storm is very strong, the ground will be disturbed, and a slightly weaker communication system will be able to raise it for you immediately.

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

Because the moon is in a vacuum environment and it is very close to the sun, solar storms on the moon are much more terrifying than the earth.

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

Astronauts wear thick outer space suits when performing extravehicular activities in low earth orbit, let alone on the moon.

These extravehicular space suits are not ordinary clothing fabrics, they are all carefully designed protective clothing, mainly to protect the astronauts, to isolate the space radiation.

Even if this is the case, the Merrican astronauts who landed on the moon returned to Earth and found that the huge amount of radiation 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 get the super radiation on the moon, otherwise everything is just empty talk.

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

If you can't find a suitable lava tube, other cliffs, canyons, or caves will do, as long as you can avoid the solar wind directly sweeping over the human base.

If it is really inappropriate, such as finding a "wind-proof" place, but the location is not good, there is not enough solar energy, or there is enough solar energy but there is not enough water resources, then it can only be in solar energy and water. The “man-made” cliffs and canyons with sufficient resources are “blocked”.

At the same time, the 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 radiation exposure to the human body will still exceed the standard.

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

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

There is no way, 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 Navigator’s manned mission to the moon this time, as well as the later permanent plan, is to use the “artificial lunar soil protective layer” method to improve the base’s radiation protection capabilities in places with sufficient energy and water resources.

The artificial lunar soil protective layer is not only the sandbag method they used this time, there are still many methods available, but they made a trick this time.

Other companies have focused sunlight or spontaneously strong light to sinter the lunar soil, and then form lunar bricks or regular lunar soil stones, and then use them to build the protective wall outside the shelter.

It's just that this process takes too long, it takes 5 hours to make a brick.

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

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

However, the process in this way is still too long, not because the bonding time is long, but because the automatic robot moves too slowly.

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

Compared with these plans, sandbags are definitely the simplest and rude way.

The four astronauts entered the warehouse on the 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 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 in it can resist impact and impact. The role of radiation is even higher.

The flexible joints of the rigid spacesuit can ensure the work efficiency of the four astronauts, and the simulated moon training in the fantasy space allows them to adapt to the gravity of the moon so that they will not deform too much in their movements.

They work in pairs, one holding the pocket, and the other holding a shovel to fill the soil.

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

After sealing, they didn't rush to transport them, but threw them aside. When they had a dozen or twenty bags, they were transported to the Moon Palace No. 2 and piled up according to the plan.

Those who plan to make a brick in 5 hours, they have already taken 5 hours to pile up the sandbag foundation.

Five hours later, their first job on the moon came to an end. It was time to rest and eat. After eating, they had to modify the lunar rover a little bit, and then went to find water.

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

The water on the moon represents everything.

The water on the moon is "oil", it can "fuel" for humans, "fuel" for plants, or "fuel" for spacecraft.

Not to mention the first two uses, just mining ice cubes for electrolysis to obtain fuel, and then providing fuel to the spacecraft. This is the use of lunar water that mankind dreams of.

The low gravity of the moon means extremely low orbital conditions, so it is cheaper to supply long-distance space travel vehicles from the moon than on the earth.

Take a mission to and from the moon as an example. If you add fuel to the moon once, the cost is only one-fifth of the cost of a round-trip with fuel on the earth.

In the future, the "reuse" capability of spacecraft will become standard, and the major part of the launch cost is maintenance and fuel. If the fuel cost is reduced to one-fifth, it will be a disruptive effect.