As the landing of surface robots increased day by day, the huge railway network transportation system began to be built.

"To get rich, build the road first", this sentence is very correct in which planet.

Each scattered mining area, from the plan to two or three thousand.There can be no small mining areas, equipped with smelters, power stations and transportation bases.Doing so will only result in waste, but industrial efficiency will not necessarily increase.

Therefore, the major mining areas need to use railways to transport minerals or semi-finished products to an area for centralized smelting.

Nuclear-powered trains are always the cheapest means of transportation.

This paving technology, people have developed very mature, fully automated, as long as the staff draw a few lines on the computer, the robot will work automatically.

At the same time, people began the next step: the huge space elevator project!

The total height of the elevator is 80,000 kilometers!

The "space elevator" is a new technology developed by humans at the Knicks, which is essentially equivalent to an ultra-high elevator of more than 8,000 kilometers.

More than a hundred years ago, in order to transport the huge amount of materials needed for the "Deep Space" to space, people suffered and tried all kinds of methods.

It is absolutely unbudgeting to use rockets or spacecraft for space transportation.The cost of the fuel and the engine cost of the light spacecraft are very large, and even with the ion engine, the driving capacity is greatly improved, it is still not cost-effective.

The cost of airship transportation is very cheap, but it is limited to the inside of the atmosphere, and it can't reach that altitude.

“It is better to suck water from the surface of the planet than to take it directly from the other side of the universe!”This sentence is the time of the Centennial Plan, a huge grumbling of science and technology workers...

But it clearly points out the first big problem in human exploration of space: people are in the "gravity well" of the planet.

Like real wells, gravity wells constrain human space engineering.

A person standing at the bottom of a well 10 meters deep, if he wants to climb out of the well, it takes all the strength; while walking 1000 meters on the level of the well, he does not need any strength.

So, "going into orbit from the surface" requires a super rocket, but from "orbit to other planets" only a small space capsule.

For example, in the Apollo program of the 20th century, the Saturn V rocket on the surface, a total of more than 3,000 tons, launched the 45-ton Apollo spacecraft into lunar orbit.

However, its lunar module ascending section, the take-off weight is only 4,670 kg.

Therefore, it is absolutely not cost-effective to transport with rockets, especially in the case of large gravity and dense atmosphere such as the Knicks.

In order to climb the gravity well, humans have found two ways to solve it.

First, collect minerals directly from the satellite of the Knicks star, and then carry out space transportation!

After all, the satellite is small in mass and the gravity is very low, which saves more industrial costs!

The second, of course, is the “space elevator”.

It was also the focus of research and development at that time.

If the construction cost of the elevator is not considered, the transportation cost of the space elevator is only one percent or even one-thousandth of that of the rocket or spacecraft.Because, it only uses cheap electricity, and does not need to consider air friction and so on!

From the scale of transportation of materials, it is also a space elevator that is better...

The construction of the space elevator is also the reason why Deep Space is in the synchronized orbit of planet GB131, maintaining the same angular speed as the planet!

The theory and specific principles of the space elevator are not difficult, which is equivalent to hanging a few ropes from the "Deep Space" and if you want to transport anything, you use the rope to hang it.

Of course, the rope can not be a pole to the end, there are several transit stations in the middle, to control it.

Its key technology, of course, is the elevator material!

Ordinary materials are not capable of this rope, for example, steel wire, if the length of nine kilometers under the gravity of the earth, it will be pulled by its own weight, so ordinary materials are completely impossible.

Fortunately, the invention of carbon nanotubes has made people see the hope of "space elevator".

Carbon nanotubes, as a one-dimensional nanomaterial, are lightweight and have perfect connections in hexagonal structures, with many abnormal mechanical, electrical and chemical properties.

It is very small, but the strength is comparable to diamond, and the flexibility is very good, can be made into long fibers.

In theory, a nanotube cable with a width of 1 meter and thinner than paper can support 13 tons of weight (Earth gravity), and its own mass is less than a few grams.

Therefore, this nanomaterial allows humans to see the possibility.

The comprehensive breakthrough of nanotechnology is to reach the L3 level of interstellar civilization.However, it does not mean that people can not invent the "carbon nanotubes" in advance, the simplest nanomaterial, has achieved initial results during the Earth period.

After a long period of research, people finally invented the way to mass-manufacturing carbon nanotubes tens of kilometers long in the Knicks.Its powerful features give a preliminary glimpse of the potential of nanotechnology...

In this way, the machine sensation, the motor roar, and a large number of industrial systems were remobilized by the government.

Many scientists have also become active, enthusiastically designing the relevant parameters of the elevator.

Of course, compared to the Knicks, GB131 space elevator is much simpler, because the planet's gravity is very small and better operated.And there are super-massive spacecraft such as "Deep Space" over the air, and the elevator will basically not shake.

As long as the spacecraft regularly sprays the ion flame, it can offset the orbital changes caused by the elevator lift.

In this way, the space elevator extended a little bit from the deep space.

This highly complex work cannot be done with robots for the time being, and must be operated by humans, so there are a large number of astronauts at all times, busy outside.

They are wearing power armor, wearing safety ropes, and there is an ion injection device behind them, which can flexibly adjust their position.

From a distance, these astronauts are like blue fireflies.

Seeing this hot and busy scene, Yu Yifeng is also full of energy, he can't help but think of a report he saw a few days ago...

The sociology of the universe points out that the overall action of a civilization is an important manifestation of the measurement of "civilization entropy value".

The stronger the cohesion of civilization, the faster the speed of doing a big event, the stronger the civilization will be.

Such a civilization often has greater potential.

In turn, the “entropy value” of the civilization will be measured.

“Just like a young person, he is still in a stage of thriving, and his neuroreactivity and motor ability are very strong.Think about what you will do, high growth!

“The same goes for civilization!”

On the contrary, if it is very difficult to gather the power of the whole civilization, it is often necessary to delay a thing, which often shows that the civilization is in a period of weakness.

The potential for such civilizational progress is small.

"Such a civilization is equivalent to the elderly ... not growing up, and even there is a possibility of decline!"