So far, the base has stockpiled more than 300 kilograms of moon-born potatoes, mushrooms, vegetables, etc.

It seems to be quite a lot, but not much. The low gravity environment still damages the human body. Although it is not necessary to exercise for two hours like in the space station in the future, it still requires a certain amount of fitness to maintain the body and heart function. Eating these lunar local products specifically can only barely last until the harvest is achieved, and you may even lose a few kilograms of hunger.

Of course, the ground tasks would not be so deducted. The small boxes of four that the couple brought in just now were all food, including high-calorie chocolate, beverage powder, canned meat (soft), etc.

The amount of food at the moon base at this time is enough for the four people to maintain six months without additional supplies and no output at all.

In this round of cargo delivered by Application No. 1, there is also a box of dry poop from the astronauts.

...Although it sounds indecent, poop is a very important material.

On soil balls, people in China C have carried out transformation activities to transform deserts into cultivated land in many places in their own country and other countries. This transformation mainly uses the poop of camels and sheep. The digestive systems of vegetarian organisms are different, and their metabolic end products are more suitable for sand to transform soil.

In the first time after the space station was built, there will be artificial soil projects in space, which use human poop and additives to synthesize things like soil. Among them, there have been obtained extra-base lunar soil brought back by Application No. 1, and a lot of preliminary work has been carried out.

Now the formula and the corresponding microbial community are ready-made, so you can just synthesize it.

Synthesizing plantable soil is just the first step. Next, the couple will have to bring Homo sapiens robot brothers to build the first glass planting house on the monthly table.

Some students will definitely wonder why it cannot be cultivated without soil?

It’s not that it can’t be, but it’s not cost-effective.

A large amount of carbon, water, nitrogen, phosphorus and potassium are needed during the growth of plants. Among them, carbon is the most troublesome on the moon. If soilless cultivation is used, almost all the carbon required for vegetation growth will be sent from the surface, and the logistics pressure is great. If personnel are used to produce carbon carriers such as carbon dioxide in the intermediate link, the planting yield will be limited.

In addition, soilless cultivation is very afraid of power outages. If the base has abnormal power, it will take several days to repair it, and the soilless cultivation vegetation may be completely clean.

The situation is different when there is soil. There is carbon and oxygen in the lunar soil. Through the soil environment, microbial communities can be used to dissociate it, which can greatly alleviate the carbon dilemma. The sedimentary carbon collected in the gas circulation system is only used when necessary.

The first generation of lunar soil cannot release enough carbon, and there is no big problem. As long as you keep a lot of water and plant it for several rounds, it will gradually improve and become closer to the real soil.

Another source of carbon is to wait for the industry to make progress.

When the moon is hit by a meteorite, through spectral analysis, people realize that there is methane on the moon. Since the main component of natural gas is ch4, unfortunately, no concentrated storage points for natural gas have been found so far.

Since methane can form hydrates (combustible ice), it is now hoped to be placed in the ice layer and surrounding areas.

The pilot was right next to the ice, preparing to find the methane bank.

Before introducing the pilot mission, the origin of the moon must be mentioned.

The most widely accepted origin of the moon in the earth ball science community today is the impact theory.

The argument proposes that not long after the solar system was reborn (the stardust cloud formed by the explosion of the previous star gradually condensed into stars and their affiliated planets due to gravity), the earth ball was hit by a competitor half its size.

The competitors here do not use quotes because it was one of the countless planetary candidates at that time. If this type of celestial body develops to a certain weight, it can gradually clear (pull it over to merge) the surrounding asteroids, becoming the only sun-orbiting object within a certain range.

The impact was huge, and the magma was thrown million kilometers away. After hundreds of millions of years of gravitational action, these thrown matter cleared out all stones in a similar way to the formation of a planet, and became a large satellite now locked by the tidal force of the earth ball (forever facing the main planet or star).

The important point of this view is that it proposes a possible reason why the moon is locked by tidality, and it is very reasonable to analyze it from the perspective of gravity. Because planets captured from the outside world are not only difficult to form near-circular orbits, but also difficult to adjust to the extent of being locked by tidal forces. However, those who do not believe in it can also be attributed to the power of time and coincidence, and everything depends on the on-site evidence.

Remote observation and landing sampling results in recent decades have also shown that the composition of lunar matter is highly homologous to the earth sphere.

The impact theory is basically determined, so it is easy to judge the moon's resource storage situation.

Of course, everyone has gone their separate ways for billions of years, so the difference is huge.

The moon has no liquid water, which is easier to understand. On the moon, where the temperature difference between day and night reaches 300 degrees Celsius, water in most areas will periodically turn into steam. Even if the volume and pressure change not only causes a slight leakage of the rock formation, it will gradually float outside the moon surface in the form of steam and blow away by the solar wind over the years.

The moon has no atmospheric protection, so it is affected by cosmic rays all year round. No matter how small the probability of the ray hitting the nucleus, it will become 100% in the long river of recording for billions of years. It is natural that there are more radioactive isotopes such as helium three and tritium.

So what is the ice layer opened by the robot?

The ice layer that has been opened has only one small tunnel at the moment, with an inclination of seventeen degrees to the surface and a width of less than two meters. It is already the limit of the Homo sapiens robots without heavy equipment.

The ice layer is very close to the surface, and the deepest part of the tunnel is only fifty meters.

It is not the ancient ice layer left by the big impact incident, it is too close to the moon surface.

In polar environments, although the sunshine intensity will decrease, the longest time of sunshine will increase. Over time, the occasional ice-water solid-liquid conversion will cause frequent damage to the rock formation. As long as cracks appear connecting the surface, the vacuum environment does not need to turn into water. The ice can be directly converted into vapor and then blown away by solar wind ionization.

Secondly, the ice sample analysis made by Homo sapiens robots was determined by the analysis that the ice layer opened was less than 100 million years old, and it was even less than that of some glaciers on the earth sphere.

Therefore, it is speculated that the ice layer evolved from the groundwater system gradually separated from the cooling magma after the moon was hit by an ice asteroid.

It is not ruled out that there are ancient ice layers left by the collision in the deeper strata in other areas of the polar region, but this is not the time to find that thing.

It is precisely because this ice layer is relatively new that people expect to find methane hydrate here.

Methane does not have super destructive power to rock formations such as water underground, but once leaks, it will be blown away by the solar wind faster.

Let’s assume that if you wrap the moon surface with water vapor, it will take tens of thousands of years to kill them. If it is methane atmosphere, it will not be able to withstand it for tens of thousands of years.

Therefore, the older the area, the harder it is to have a large-scale methane-rich area. Although the ice layer that has been opened is now 80 million years old, at least the ice layer is well preserved, and there are many possibilities.

As for deep storage... people don't even understand the soil strata, and can they still expect to do deep exploration on the moon? They can only dig holes one by one to check slowly.

The pilot was standing at the door of the ice wall in the ice layer, where the pits were already bumpy by the robot.

The pilot pulled the cable, carried the equipment, and connected the construction light to turn on.

For this task, an old-fashioned construction lamp was specially sent. This construction lamp has an average brightness and a normal lighting distance, but it can release huge heat from the lighting range.

The headlights of several kilowatts were turned on a few meters away, and the ice cuts did not respond at all, but in no hurry, the pilot took out a new type of emergency light to drill holes on the flat side of the tunnel.

The biggest difference between this emergency light and a traditional light is that it is wirelessly charged, and it is not a coil-mounted mode for home phones, but directly receives microwaves. It can be used for 40 hours to charge once, and of course the brightness is just as damn like other emergency lights.

Light up the tunnel, turn off the spacesuit lights, and return to the ice wall at the entrance of the ice layer. The situation here has changed.

Ice is a bad conductor of heat. Even if the ice inside is minus 100 degrees Celsius, it will not delay the surface melting. The surface has become like a water surface, with a slight ups and downs, but it looks silky smooth.

The pilot took out a gadget and plastic surgery on the ice.

After irradiating with the headlights for an hour, I finally made the ice surface look like a mirror.

The project light task is completed, change the lights.

The second engineering light is a normal light, which is on, but has no temperature.

Put the light directly onto the mirror ice wall, high-resolution cameras, cameras, sound wave generators (sucking the ice surface), infrared, ultraviolet, spectrum, vibration, laser instruments, etc., are all multifunctional instruments, but they are too many large and small, and they are still hung on the special lamp stand.

This is a strange way to look at the ice layer and estimate the reserves. In addition to normal information collection, it is also necessary to measure the flatness of the surface of the ice wall to provide a correction basis for subsequent calculations.

The estimation method was designed specifically for this ice layer by scientists. Like most tasks, the only reason is to save the load and weight of the equipment. As for the computing power and labor costs required for analysis, it is not important. The moon does not use too professional complete sets of exploration equipment for the time being.
Chapter completed!