With the increasing number of surface robots landing day by day, the construction of a huge railway network transportation system has begun first. Ｘ

"If you want to get rich, you must first build roads", this sentence is very correct on any planet.

There are two or three thousand scattered mining areas in each area. It is not possible to equip every small mining area 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 be connected in series by railway, and minerals or semi-finished products are transported to an area for centralized smelting.

And nuclear-powered trains will always be the cheapest means of transport.

This paving technology has been developed very maturely, fully automated, as long as the staff draws a few lines on the computer, the robot will work automatically.

At the same time, the next step in the project begins: a huge space elevator project!

The total height of the elevator, 8,800 km!

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

More than 100 years ago, in order to transport the massive materials needed by the "Deep Space" to space, people endured all kinds of hardships and tried all kinds of methods.

It is definitely not cost-effective to use rockets or spaceships for space transportation all the time. The cost of fuel and engine costs of the light spacecraft is very large, and even with the ion engine, the propulsion capacity is greatly improved, it is still not cost-effective.

The cost of transportation by airboat is very cheap, but it is limited to the interior of the atmosphere, and it cannot reach that height.

"It's better to suck water up from the surface of the planet than to transport it directly from the other side of the universe!" This sentence is a huge complaint from scientific and technological workers at the time of the Centennial Plan......

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

Like a real well, gravity wells constrain human space engineering.

A person standing at the bottom of a well at a depth of 10 meters has to spend all his strength to climb out of the well; And walking 1,000 meters on the flat ground next to the well doesn't take much effort.

Therefore, "from the surface to space orbit", it takes a super big rocket, but from "orbit to other planets" only needs a small space capsule.

For example, in the Apollo program of the 20th century, the Saturn 5 rocket on the surface, totaling more than 3,000 tons, launched the 45-ton Apollo spacecraft into lunar orbit.

However, the ascent stage of its lunar module has a take-off weight of only 4,670 kg.

Therefore, it is definitely not cost-effective to transport it by rocket, especially in the case of a high-gravity, dense atmosphere like the Knicks.

In order to climb the gravity well, humans have come up with two ways to solve it.

First, collect minerals directly on the satellites of Knicks and transport them to space!

After all, the satellite has a small mass and low gravity, which saves industrial costs!

Second, of course, the "space elevator"!

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

If you don't consider the construction cost of the elevator, the transportation cost of the space elevator is only one hundredth or even one thousandth of the cost of a rocket or spacecraft. Because, it only uses cheap electricity, and you don't need to think about air friction and the like!

In terms of the scale of transportation of materials, the space elevator is also superior......

The construction of the space elevator is also the reason why Deep Space stays in the synchronous orbit of planet GB131 and maintains the same angular velocity as the planet!

There is nothing difficult about the theory and specific principle of the space elevator, which is equivalent to hanging a few ropes from the "Deep Space", and forcibly hanging them with ropes if you want to transport anything.

Of course, the rope can't be reached all at once, and there are several transfer stations in the middle to manipulate.

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

Ordinary materials are not capable of this kind of rope, for example, steel wire, if it hangs down nine kilometers in length under the earth's gravity, it will be pulled off by its own weight, so ordinary materials are not good at all.

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

Carbon nanotubes, as one-dimensional nanomaterials, are lightweight, have a hexagonal structure that is perfectly connected, and have many abnormal mechanical, electrical, and chemical properties.

It is very fine, but its strength is comparable to that of diamond, and it is very flexible enough to make long fibers.

Theoretically, a nanotube ribbon 1 meter wide and thinner than paper can support a weight of 13 tons, while its own mass is less than a few grams.

So, this nanomaterial allows mankind to see the possibility.

A comprehensive breakthrough in nanotechnology is to reach the L3 level of interstellar civilization. However, it does not mean that people cannot invent in advance, and "carbon nanotubes", the simplest nanomaterials, have had initial results in the earth period.

After a long period of research, people finally invented the way to manufacture carbon nanotubes with a length of tens of kilometers in batches during the Nix Star period. Its powerful functions give people a glimpse of the potential of nanotechnology......

In this way, the machines were sensational, the motors roared, and a large number of industrial systems were remobilized by the government.

Many scientists have also become active and are interested in designing the relevant parameters of elevators.

Of course, the space elevator of GB131 is much simpler than that of Nix, because the planet's gravitational pull is very small and it is easier to operate. Moreover, there is a supermassive spaceship like "Deep Space" in the sky, and the elevator basically does not shake.

As long as the spacecraft regularly sprays ion flames, it can counteract the changes in orbit caused by the elevator lifting.

In this way, little by little, the space elevator extended from Deep Space.

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

They are dressed in power armor, with safety ropes and ion jets behind them, so they can flexibly adjust their position.

From a distance, these astronauts look like blue fireflies......

Seeing this busy scene, Yu Yifeng was also full of enthusiasm, and he couldn't help but think of a report he saw a few days ago......

Cosmic sociology points out that the overall action force of a civilization is an important embodiment of measuring the "entropy value of civilization".

The stronger the cohesion of a civilization and the faster it can do a great thing, the stronger the civilization will be.

The greater the potential of such a civilization.

In turn, the smaller the "entropy" of that civilization.

"It's like a young man, still in his thriving stage, his nervous reflexes and his athletic ability are very strong. I will do whatever comes to mind, and I have a high growth potential!

"The same is true of civilization!"

On the other hand, if it is very difficult to gather the strength of the whole civilization, and it is necessary to procrastinate in doing something, it often means that the civilization is in a period of weakness.

The potential for such civilizational progress is not great.

Such a civilization is equivalent to the elderly...... The growth is not high, and there is even the possibility of recession! ”r