The Technology Tree of Xueba

Peng Feng led the prospecting team to dig more than 20 detection points in half a month.

They came to the depths of a large crater on the back of the moon and continued to collect samples of lunar crust rocks.

Peng Feng encouraged: "Everyone hurry up. This is the last detection point. After we collect samples, we can return to the moon to advance to the base."

They began to collect lunar rock formations at this detection point in accordance with previous procedures.

Wang Zhihua is in charge of debugging the equipment's ruler. He thought that after this work, he had completed his service plan on the moon, and he could apply to return to earth.

Now he is tangled whether he is returning to Earth or still working at the Moon Advance Base.

Wang Zhihua was absent-minded, and set the scale of the machine directly according to the previous operation process.

As time passed slowly, the drilling machine trembled and stopped working quickly.

When Peng Feng saw this situation, he immediately shouted: "Wang Zhihua, how did you do this, how can you follow the ruler set last time, we last collected on a mountain peak, this time in a crater At the bottom, the thickness of the crust can be 5 kilometers.

The density of the lunar crust is very high, which can easily damage the rig. "

When Wang Zhihua saw the rig was damaged, he began to think it was his fault and just wanted to apologize.

Suddenly seeing the parameters of the depth of the rig, he immediately retorted: "Captain Peng Feng, you understand it wrong!

That's right, there is a 5 km altitude difference between the previous collection point and here based on the lunar ground plane.

But we collected a sample of 20 kilometers of the lunar crust. Now the rig has just drilled to 18.9 kilometers, but it has not reached the predetermined 20 kilometers at all.

Our depth reference is measured at the height of the ground, not at the height of the moon's ground plane. "

Peng Feng looked at the data carefully and found that Wang Zhihua was right. He said a little embarrassedly: "I didn't investigate carefully just now, I just misunderstood you.

How can the rig be suddenly damaged without reaching a depth of 20 kilometers. "

While they were talking, the other team members had pulled up the damaged rig.

Peng Feng looked at the impact, and the blade made of high-density material in front had been completely polished.

After the blade is polished, the rig cannot continue to cut the rock, causing it to get stuck in the rock gap and directly burn the rig components.

Peng Feng looked at the collected samples of lunar crustal rocks, he said easily: "Fortunately, crustal samples have been collected, and the damage to the rig can be reported, and our work is completed."

On January 11, 2028, Zhou Yu was learning about the minerals on the Moon at the Spark Science and Technology Research Institute.

Huang Ke is reporting the statistics of scientists to Zhou Yu.

"General Manager Zhou, we use advanced lunar resources to detect satellites and space shuttles, and repeatedly detect lunar resources.

We sent another 76 prospecting teams to sample the lunar crust rocks. Scientists have analyzed thousands of lunar crust rock samples.

Now we have all the resources on the moon.

There are not many valuable minerals on the moon. Most of the elements existing on the earth are on the moon, but they are not concentrated together to form mineral veins.

For large-scale veins with reserves of more than one million tons, there are only 43 iron ore, 27 copper ore, 8 zinc ore, 5 silver ore, and 2 gold ore.

Because the cost of lunar mining is relatively high, they are extremely valuable veins.

The cost of mining other veins is higher, and it is better to send a shuttle directly to the asteroid belt to mine. "

Zhou Yu said with a smile: "This is already very good. Now sending intelligent robots to mine these valuable veins, other veins will be left to future people.

After the technology matures, those veins with relatively low reserves will be able to resell it for a good price. "

Zhou Yu is very satisfied with the discovery of large veins on the moon, especially the discovery of precious metals such as large gold mines.

The two metals, gold and silver, are extremely useful in modern industry, but they are somewhat expensive.

Now they can mine these metal reserves with the largest reserves, which can save a lot of costs.

"General Zhou, our company's scientists analyzed the lunar rock specimens and found some strange phenomena." Huang Ke said mysteriously.

"What are weird phenomena. It is good to have weird phenomena, and cracking them may lead to some technological progress.

There are no mysterious things in the world, and now we feel mysterious. It is just that technology has not developed to such a degree and cannot explain this phenomenon. Zhou Yu asked with excitement.

When the ancients saw videos on their mobile phones, they would surely think that this was a mysterious phenomenon.

If certain future technologies appear on the present earth, the earth people will certainly feel that this is a mysterious phenomenon.

It is not terrible to appear mysterious, it is terrible to worship them as superstition.

Huang Ke saw Zhou Yu's very expectant look, and he immediately said what they introduced when chatting with scientists.

"General Zhou, in order to detect the existence of lunar crust ore veins, we have sent several prospecting teams to collect many specimens of lunar crust rocks.

The rock specimens brought back are much denser than the earth's rocks.

Lunar rock specimens are more dense, and their density is different, but they are higher than those on the earth.

The total mass of the moon will be much larger than the current calculation results. Correspondingly, its gravitational strength will also be greater.

Considering that the lunar surface is much closer to the center of the moon than the surface to the center of the earth ~ www.NovelMTL.com ~ and its total mass, the gravity will be much larger than we think.

However, the gravity of the moon is only one sixth of the gravity of the surface. According to the gravitational force, the mass of the moon is much smaller than the lunar mass estimated from the density of lunar rock specimens.

It seems that lunar gravity has nothing to do with its density or mass.

This is of course impossible. Scientists speculate that the density distribution of the moon is extremely uneven.

There are many gases or cavities in the lunar crust that can cause this phenomenon.

It's just that what causes the density of the lunar crust is uneven, and it remains to be detected in the future. "

Zhou Yu heard that Huang Ke was talking about this matter. He felt that there were not many secrets hidden inside.

Different parts of the celestial body have different densities, which is very normal.

For example, the magma inside the earth must have a different density from the crust.

The density of the sun's center and the density of the sun's surface are also very different. This is a very normal phenomenon of the planet.

Even if the difference between the moon is a little big, it is in a reasonable range.

"This question is nothing special. It's not worth our continued tracking. Where do we put the moon rock samples, I'll take a look." Zhou Yu asked.

Huang Ke immediately responded: "General Manager Zhou, he is in the Astronomical Environment Laboratory. We have collected too many moon rock samples, and we are ready to donate to other scientific institutions."

Things are rare and expensive. Now that there are too many moon rock samples of Spark Technology, the value has dropped sharply.

These lunar rock samples are kept in the laboratory and cost a lot of money every day.

Huang Ke had long wanted to dump this hot potato, saw Zhou Yu was interested in lunar rock samples, and immediately took him to the laboratory that stored lunar rock samples.

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