Tower Defense Strategy

So far, the base has stocked more than 300 kilograms of potatoes, mushrooms, and vegetables from the moon.

It seems quite a lot, but not much. The low-gravity environment is still harmful to the human body. Although it will not require two hours of fitness as in the future space station, it still needs a certain amount of fitness to maintain body and heart function. Specially eating these lunar products can barely support the harvest. Hungry and thin a few catties.

Of course, the ground mission will not be so deadly. The four small boxes brought in by the couple just now are all food, including hot chocolate, beverage powder, canned meat (soft), etc.

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

In the cargo delivered by Application One this round, there is also a box of astronaut's dry poo.

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

On the earth ball, the people of country C have carried out transformation activities in their own country and other countries to convert many deserts to cultivated land. This transformation mainly uses the **** of camels and sheep. The digestive system of vegetarian organisms is different, and their metabolic end products are even better. Suitable for changing sand to soil.

As soon as the future space station is built, there will be a space artificial soil project, which uses people to add additives to synthesize soil-like things. Among them, we have also obtained the lunar soil outside the base brought back by Application One, and have done a lot of preliminary work.

Now the formula and the corresponding microbial community are readily available, just follow the synthesis.

Synthesizing plantable soil is only the first step. Next, the couple will take the Homo robot brothers to build the first glass planting house on the moon.

Some students will be surprised, why can't it be cultivated without soil?

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

Plant growth requires a large amount of carbon, water, nitrogen, phosphorus, and potassium. Among them, carbon is the most troublesome on the moon. If soilless cultivation is used, almost all the carbon needed for vegetation growth must be sent from the surface, and the logistics pressure is very high. If people are used as an intermediate link to produce carbon carriers such as carbon dioxide, planting output will be restricted.

In addition, soilless culture is very afraid of power failure. If the base has abnormal power and needs to be repaired for several days, the vegetation of soilless culture may be completely dead and clean.

The situation with soil is different. The lunar soil contains carbon and oxygen. Through the soil environment, the use of microbial communities can dissociate them, which can greatly alleviate the carbon dilemma. The deposited carbon collected in the gas circulation system Use only when necessary.

The first-generation lunar soil still cannot release enough carbon, and the problem is not big. As long as you keep the water and plant for a few more rounds, it will gradually improve and become closer and closer to the real soil.

Another source of carbon, you need to wait for the progress of the industrial system.

When the moon was hit by a meteorite, through spectral analysis, people recognized that there was methane on the moon, which is the main component of natural gas, CH4, but unfortunately, no concentrated natural gas storage sites have been discovered so far.

Since methane can easily form hydrates (combustible ice), it is now hoped to be pinned on the ice and its surroundings.

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

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

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

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

The competitor here does not need quotation marks, because it was one of countless planet candidates at that time. When this type of celestial body develops to a certain weight, it can gradually clear (pull over and merge) the surrounding asteroids by its own gravity, and become the only orbiting planet within a certain range. Day celestial body.

The impact was huge, and magma was thrown millions of kilometers away. After hundreds of millions of years of gravitational action, the ejected matter cleared all the rocks in a way similar to the formation of planets, and became now locked by the tidal force of the earth ball ( A large moon that always faces the main planet or star).

The important point that this view is recognized by most people is that it proposes a possible reason for the moon being locked by tides, and it is very reasonable to analyze it from the perspective of gravitation. Because it is not only difficult for planets captured from the outside to form a near-circular orbit, but also difficult to adjust to the extent that they are locked by tidal forces, but the unbelievers can also push the power of time and coincidence, everything depends on the evidence on the spot.

The results of remote observation and landing sampling in recent decades also show that the composition of the lunar material is highly homologous to that of the earth.

The impact theory is basically determined, so it is very easy to judge the lunar resource storage situation.

Of course, everyone has separated for billions of years, so the difference is also very big.

The moon does not have liquid water. This is easier to understand. On the moon, where the temperature difference between day and night reaches 300 degrees Celsius, the water in most areas will periodically turn into steam, even if the volume and pressure change, the rock formation will leak a tiny bit over the years. It will gradually diffuse to the surface of the moon in the form of vapor and be blown away by the solar wind.

The moon has no atmospheric protection, so it is affected by cosmic rays all year round. No matter how small the probability of the rays hitting the nucleus, it will become 100% in a long river of hundreds of millions of years. There are more radioactive isotopes such as helium III and tritium. Of course.

What about the ice layer that the robot breaks through?

The ice layer that has been opened up, for the time being, there is only a small tunnel with an inclination angle of 17 degrees to the surface and a width of less than two meters. This is already the limit of Homo sapiens without heavy equipment.

The ice layer is very close to the surface, and the deepest part of the tunnel is only 50 meters.

It is not an ancient ice layer left over from a major impact event, it is too close to the moon's surface.

In the polar environment, although the intensity of sunshine will decrease, the longest sunshine duration will increase. Over time, the occasional ice-water solid-liquid transformation will occur, and the river will destroy the rock formation very frequently after long time. As long as there are cracks connecting the surface, The vacuum environment does not need to become water, ice can be directly converted into steam, which is then blown away by solar wind ionization.

Secondly, the previous ice sample analysis done with Homo sapiens robots determined that the age of the opened ice layer is less than 100 million years, even not as long as some glaciers on the earth ball.

Therefore, it is speculated that the ice layer evolved from the groundwater system that 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 original collision in deeper strata in other regions of the polar region, but this is not the time to look for that thing.

It is also because this ice layer is relatively new that everyone expects to find methane hydrate here.

Methane does not have the super destructive power of water in the ground, but once it leaks, it will be blown away by the solar wind faster.

Assume specifically that if water vapor wraps the moon's surface, it will take tens of thousands of years for the solar wind to dry them all. If it is a methane atmosphere, it will not be able to withstand it for 10,000 years.

Therefore, the older the area, the more difficult it is for the shallow layer to have large-scale methane enrichment. Although the ice layer that is now opened is 80 million years old, at least the ice layer is well preserved, and the possibility is much greater.

As for deep storage... People don't even understand the earth ball stratum, can they still count on deep exploration on the moon? You can only make holes one by one and check them slowly.

The pilot was standing at the door of the ice wall of the ice, where the pits had been hit by the robot.

The pilot pulled the cable, came over with the equipment, connected the construction lights and turned on.

For this task, an old-fashioned construction lamp was specially sent. This kind of construction lamp has average brightness and average lighting distance, but it can release huge heat to the lighting area.

The headlights of several kilowatts were turned on several meters away, and there was no response at all from the ice cut, but in no hurry, the pilot took out a new type of emergency light to drill and deploy on the flat side of the tunnel.

The biggest difference between the emergency light and the traditional light is that it is wirelessly charged, and it is not the coil mode of the home mobile phone, but directly receives microwaves. It can be used for forty hours once charged. Of course, the brightness is the same as other emergency lights.

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

Ice is a poor conductor of heat. Even if the ice inside is one hundred degrees below zero, it will not delay the surface melting. The surface has become like a water surface, slightly undulating, but it looks silky smooth.

The pilot took out a small tool to shape the ice.

After spending hours with the headlights~www.wuxiaspot.com~, the ice surface was finally made like a mirror.

The project light task is completed, and the light is replaced.

The second engineering light is a normal light, bright, but no temperature.

Directly attach the lamp to the mirror ice wall, high-resolution camera, video camera, sound wave generator (to absorb the ice surface), infrared, ultraviolet, spectrum, vibration, laser, etc., are all multi-functional instruments, which can be large and small. There are too many small ones, and they are still full on the special light stand.

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

This estimation method is specially designed by scientists for this ice layer. Like most tasks, the only reason is to save equipment load weight. As for the calculation power and labor cost required for analysis, it is not important. The moon is not needed for the time being. A complete set of exploration equipment that is too professional.

The analysis result will take several days to come out. It can be judged with the naked eye under the high-beam light. The opened piece is at least tens of thousands of tons. Due to the cracks and foaming inside the ice layer, it is still impossible to see. The whole picture of the ice cube, whether there are undercurrent gaps connecting other ice cubes, and the composition of each part, all have to wait for the analysis results.