Vol 3 Chapter 2230: The mystery of the origin of solid water on the moon

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Under the watchful eyes of everyone, the drill bit was lifted from the drilling by the drawworks, and then the direction was reversed. A thick intelligent robotic arm clamped the drill bit and held the 1.5-meter drill pipe. The hydraulic device above the drill pipe slowly moved down, pushing the cylindrical core lunar soil samples drilled in the hollow drill pipe out to form columnar adobes, which were then neatly placed aside by the robotic arm.

The drill pipe was turned again and put into the well to continue drilling, and the robotic arm here used a small drill bit to start sampling on these cylindrical lunar soil samples, and then put the 'Wangshu No. 2' intelligent Laboratory analysis is carried out in the lunar soil composition analysis laboratory above the lunar surface detection experimental vehicle.

In addition, relevant samples will also be sampled, backed up and packaged, and then marked and stored, waiting to be taken out after humans land on the moon in the future, and brought back to Earth for more detailed analysis and research.

As we estimated, the sedimentary layer of the surface lunar soil is about 80 to 150 cm, and the lower layer is a relatively firm extrusion layer. A geologist stroked his eyes, looked at the data on the screen and said.

"From the current drilling analysis, through the piling and pouring technology, we can build housing facilities here, so that the geological structure can fully support."

Hearing the expert's words, another expert shook his head and said, "Don't say that the lunar environment is complicated, just say how do you get the cement and steel bars in this concrete, it won't be transported from the earth, it will cost too much. already."

Then there is only one way left, compacting the foundation, and then pouring the raft foundation, which can also achieve very good stability. Another expert spoke up.

Still that way, material! Another expert shook his head: "Let's not talk about how to obtain cement and steel bars, let's talk about the cruel environment on the moon, the light is more than 100 degrees, and the shadow is more than 100 degrees negative, the concrete you poured may not have When it freezes, it freezes into a popsicle."

Hearing the expert's words, Shi Zhaoping said with a smile: "Actually, we might as well use this environment to find a way.

There is no need for such a big trouble at all. You can get materials on the spot, mix water and lunar soil into mud, and then pour it into the well. With the ultra-low temperature, the mud will freeze quickly and mix with the underground freezing in the entire lunar soil. Soil blends together.

I believe that everyone knows the firmness of frozen soil. Isn’t the foundation made in this way more considerate than any concrete? "

Hearing Shi Zhaoping's words, all the experts present nodded in appreciation. Indeed, this is a wild idea, but it is also an excellent solution according to local conditions.

These experts have all known the firmness of frozen soil at ultra-low temperature, and its hardness is no worse than concrete.

The analysis is recorded.

While everyone was discussing, the first batch of sample test components came out, which also stopped everyone from discussing and focused their attention on the analysis and test report on the big screen.

"There is not much difference between the cost of the lunar soil on the surface, but it is also very different. For example, the content of helium-3 is relatively low. In addition, there is the element of water, which should be the groundwater contained in the deep lunar soil." The geologist said.

Well, there is this. Another expert pointed and said: "The composition ratio of the soil is also very different. There are fewer fine sand particles on the surface, and the rock and soil particles are relatively rough."

Compared with the constant alternating hot and cold changes on the lunar surface, the ambient temperature of the deep lunar soil is relatively constant and does not change much, so the lunar soil rocks and soils maintain a relatively primitive state, which is precisely for us to study the origin and composition of the moon. Very helpful. Another planetary expert looked at these data reports and rubbed his hands excitedly.

What he is talking about is a phenomenon or reason for the formation of lunar regolith on the lunar surface. Different from the formation of sand on the earth, the reason why the lunar soil on the lunar surface is fine sand is because the lunar surface is constantly changed by light.

As mentioned earlier, the temperature on the moon where it is exposed to sunlight can reach more than 100 degrees, and where there is no sunlight, it can drop to more than 100 degrees below zero. This drastic change in hot and cold will cause the lunar soil to gradually fragment between expansion and contraction, and then, over time, eventually fragment from large rocks to fine sand.

As the expert said, sunlight only affects the lunar soil on the surface, and the deep lunar soil is not affected by these factors, so the ambient temperature is relatively constant, and the moon itself has less geological movement. , so it can retain the composition of the original lunar soil composition on which the moon's formation depends.

This provides a very favorable and direct research sample for studying the origin and formation of the moon, which is why he is so excited.

The groundwater content here is relatively rich. Where does this water come from, it cannot be brought by the moon. Some experts looked at the water content on the table and asked curiously.

Hearing this question, the experts present laughed.

An expert explained with a smile: "At present, there are many theories about the source of water on the moon, and there are three mainstream and recognized theories in the academic world.

One external factor, two internal factors.

Let’s talk about external factors first. Many scientists have proposed that the reason why there is so much solid ice and groundwater content on the moon is that the moon has been attacked by a lot of meteorites.

Because the moon has no atmosphere, these meteorites cannot burn in the atmosphere and can directly hit the moon, so a lot of water and solid ice in the meteorites remain on the moon.

Some scientists even believe that among the many craters on the moon, there are many craters, and even the lunar sea may have been formed by the impact of huge ice meteorites or ice asteroids. UU Reading www.uukanshu.com

Under the irradiation of sunlight, these icy asteroids and meteorite fragments will slowly melt, and then merge into the lunar soil, forming what is known as solid ice and rich groundwater in the lunar soil.

And two internal factors, one is that there is water inside the moon. This water will follow the geological movement in the moon, and then gradually emerge from the deep layer of the moon in the state of water vapor or liquid water, and then reach the surface layer. When it is affected by the low temperature outside, it solidifies into a state of solid ice.

This statement is also very mainstream, and many people support it.

As for the third theory, it is relatively small. It is said that the water resources on the moon are due to the water resources formed by the reaction between the oxygen molecules in the manganese iron ore on the moon and other elements in the lunar soil, and then gradually accumulate more. . "

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