Chapter 2230 The mystery of the origin of solid water on the moon
Under the watchful eyes of everyone, the drill bit was lifted up from the drilling well by the drawworks, and then the direction was changed. A thick intelligent robotic arm clamped the drill bit, and slowly moved the 1.5-meter drill pipe. The hydraulic device above the drill pipe slowly moved toward the drill pipe.
Next, the cylindrical core lunar soil samples drilled in the hollow drill pipe were pushed out to form columnar adobes, which were then neatly placed aside by the robotic arm.
The drill pipe was turned around again and put into the drilling well to continue drilling. The robotic arm here used a small drill bit to start sampling these columnar lunar soil samples, and then put it into the 'Wangshu 2' intelligent
Laboratory analysis is carried out in the lunar soil composition analysis laboratory on the lunar surface exploration experimental vehicle.
Relevant samples will also be sampled, backed up, encapsulated, and then labeled 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 expected, the surface sedimentary layer of lunar soil is about 80 to 150 centimeters, with a relatively solid extrusion layer underneath. A geological expert stroked his eyes and looked at the screen
The data in it spoke.
"Judging from the current drilling analysis, we can build housing facilities here through pile driving and irrigation technology, so that the geological structure can fully support it."
After hearing what this expert said, another expert shook his head and said: "Not to mention that the lunar environment is complicated, but how do you obtain the cement and steel bars in the concrete? It cannot be transported from the earth, which is too costly.
Already."
Then there is only one way left, which is to compact the foundation and then pour a raft foundation, which can also provide very good stability. Another expert said.
Still the same method, materials! 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, while the shadow is more than 100 degrees.
The concrete you poured may have frozen into popsicles before it solidified."
After hearing what this expert said, Shi Zhaoping said with a smile: "In fact, we might as well take advantage of this environment to find a way.
There is no need to go through so much trouble at all. You can use local materials, mix water and lunar soil to form mud, and then pour it into the drilling. With the ultra-low temperature, the mud will freeze quickly and mix with the underground freezing in the entire lunar soil.
The earth merges into one.
I believe everyone is familiar with the solidity of frozen soil. Isn’t the foundation created in this way more balanced than concrete?”
After hearing Shi Zhaoping's words, all the experts present nodded in appreciation. Indeed, this is a wild idea, but it is also an excellent plan adapted to local conditions.
These experts are familiar with the solidity of frozen soil at ultra-low temperatures. Its hardness is no worse than concrete.
Analysis revealed the demerit.
While everyone was discussing, the test components of the first batch of samples came out, which made everyone stop the discussion and focus on the analysis and test report on the big screen.
"The cost is not much different from the surface lunar soil, but it is also very different. For example, the helium-3 content is relatively low. In addition, there is also water element, which should be the groundwater contained in the deep lunar soil."
The geological expert spoke.
Well, there is another one. Another expert pointed and said: "The composition ratio of the soil is also very different. There are fewer fine sand particles on the surface here, and the rock and soil particles are coarser."
Compared with the constant alternating hot and cold changes on the surface of the moon, the environmental temperature of the deep lunar soil is relatively constant and does not change much. Therefore, the lunar soil rock and soil remain in a relatively primitive state, which is precisely for our study of the origin and composition of the moon.
It's very helpful. Another planetary expert looked at these data reports, rubbed his hands and said excitedly.
What he is talking about is a phenomenon or reason for the formation of lunar soil on the moon's surface. Different from the formation of sand on the earth, the reason why the lunar soil on the moon's surface appears to be fine sand is because the moon's surface is constantly being subjected to
Light changes.
As mentioned before, the temperature of places on the moon that is illuminated by sunlight can reach more than 100 degrees, while the temperature of places without sunlight can drop to more than 100 degrees below zero. This sudden change in heat and cold will make the moon
The soil gradually breaks apart between expansion and contraction, and then eventually breaks from large rocks into fine sand as time goes by.
And as this expert said, sunlight only affects the surface lunar soil, and the deep lunar soil is not affected by these factors, so the ambient temperature is relatively constant, and the moon itself has relatively little geological movement.
, so it can retain the original lunar soil composition that the moon's formation relied on.
This provides a very beneficial 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 couldn't help but curiously asked.
Hearing this question, the experts present laughed.
An expert explained with a smile: "There are currently many theories about the source of water on the moon, and there are currently three mainstream and recognized theories in the academic community.
One external factor and two internal factors.
Let’s talk about external factors first. Many scientists have suggested that the reason why there is so much solid ice and groundwater content on the moon is because the moon has been hit by a lot of meteorites.
Because the moon has no atmosphere, these meteorites cannot burn in the atmosphere and can directly hit the moon. Therefore, 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, many of them and even the lunar maria may have been formed by the impact of huge ice meteorites or icy asteroids.
Under the irradiation of sunlight, these icy asteroids and meteorite fragments will slowly melt and then merge into the lunar soil, forming the well-known solid ice and abundant groundwater in the lunar soil.
As for the two internal factors, one is that there is water inside the moon. With the geological movement in the moon, this water will gradually emerge from the deep layers of the moon in the form of water vapor or liquid water, and then reach the surface.
When affected by the low temperature outside, it solidifies into solid ice.
This view is also very mainstream, with many people supporting it.
As for the third theory, which is relatively niche, it is said that the water resources on the moon are water resources formed after the reaction of oxygen molecules in the manganese ore on the moon with other elements in the lunar soil, and then little by little add up.
