The last human in the universe

Chapter 111 Super Civilization
"The most important feature of this level of civilization is antimatter. Based on this, it is basically certain that this level of civilization will apply antimatter to weapon systems.

Compared with level 2 civilizations, their spaceships can be made bigger, faster, and their weapons are more powerful, which can form a crushing situation against level 2 civilizations.

In this way, it is easy to understand that the deep space civilization was eventually destroyed by the Moyun Litar civilization.Because the Moyun Litar civilization is a relatively typical level 3 civilization. "

"Level 4 civilization, non-working fluid civilization, or superstar cluster civilization.

We believe that at the peak of level 3 civilization, the potential of the ion propulsion engine will be tapped to the highest, with the highest efficiency and driving force.At this time, civilization will inevitably start to develop more advanced, more energy-saving, and more efficient propellers in order to obtain higher speed and range of motion.

However, within the current scientific and technological system, within the scope of conventional propulsion methods, it is no longer possible to find a more efficient propulsion method than ion propulsion.The only way to achieve a more efficient propulsion than ion propulsion is only one, propellant-free propulsion.

Propellant-free propulsion is still far away from us at present, and we cannot speculate on the specific technical details of this propulsion method, and some are just two conjectures.

[-]. With the help of some oscillating characteristics of the quantum vacuum, the advancing power is obtained from it through the special influence method.

Second, optical radiation propulsion, that is, by ejecting high-energy-density photons backward to achieve the purpose of pushing the spacecraft forward.Because the rest mass of photons is zero, this kind of propulsion method can also be called no propellant propulsion.

As for the way of energy source, whether the level 4 civilization still relies on large-scale controllable nuclear fusion as an energy source, and uses antimatter as an energy storage 'battery', we are still unable to speculate.We don't know whether breakthroughs in basic theories can lead to more advanced energy sources after reaching the height of level 4 civilization. "

"Level 5 civilization, speed of light or faster than light speed civilization, or called spiral arm civilization.

Before level 5 civilization, the sailing speed of level 0-4 civilization was all limited to below the speed of light.But at the level 5 civilization stage, we believe that they will have the ability to break the speed of light limit.But as for the specific technical details of breaking the speed of light limit, we cannot make too precise speculations.

There is only one guess at present, that is, the Alcubierui metric.To put it simply, it is to shrink the space in front of the spaceship and expand the space behind it, so that the spaceship moves forward in a range of fluctuations.This interval is the so-called 'warp bubble', and if the 'warp bubble' drives the spaceship forward, it can obtain a sailing speed equal to or exceeding the speed of light.

However, although the Alcubierre metric is mathematically feasible, and it conforms to Einstein's field equation, its calculation results may not have physical significance, and it does not necessarily mean that such a device can actually be built .

Because this hypothetical mechanism implies a negative energy density, it needs the participation of matter with a negative mass to create it.If 'negative matter' does not exist, the existence of such an engine can be disproved.

We can't be sure that future faster-than-light travel will actually be possible in this way—it's also possible that such technology simply doesn't exist in the universe.But if there is a civilization that has mastered this technology, we will classify it as a level 5 civilization.

And what is the energy source that supports this navigation method, we cannot speculate for the time being.Because in our cognition, the annihilation of positive and negative matter with an energy conversion efficiency as high as [-]% is already the upper limit.Obviously, the annihilation of matter and antimatter cannot support this kind of navigation.

Because the civilization that has mastered this technology can have an activity range of thousands or even tens of thousands of light years, we also call it a spiral arm civilization. "

"Level 6 civilization, wormhole civilization or river system civilization.

Simple super-light voyage, even if the voyage speed is as high as 10 times or 100 times the speed of light, although this is already a super technology we can't imagine, it still seems too slow in the face of the vast space.We believe that beyond curvature navigation, there are most likely to be more advanced navigation methods.

In this way, we currently have almost no theoretical reserves, but have already guessed.Wormholes, space folding, space jumping, etc. are all descriptions of this navigation method.

With the help of this navigation method, the navigation speed of the spacecraft can no longer even be measured by how many times the speed of light.It may even be possible to achieve instant travel between the two places.We believe that the scope of activities of this level of civilization can undoubtedly reach as much as an entire river system.Therefore, we also call it the river system level civilization.

Level 6 civilization and higher, it is beyond our current technology and theoretical level that can be speculated. "

Looking at the document in his hand, Zhao Changxing pondered for a long time.

This is the craziest imagination of human civilization about the super civilization that may exist in the universe and its technological methods.

After that, Zhao Changxing held several meetings and announced a series of important decisions.

The most important one is undoubtedly to completely change the civilization development strategy at this stage, from "development first" to "combat readiness first".

In any case, in the face of a mining spaceship, if it has malicious intentions towards its own side, then it must try to resist.

At this stage, Zhao Changxing did not choose to announce that "a mining spacecraft of the Moyun Litar civilization is very likely to be approaching the solar system".After all, no matter how reasonable the speculation is, it may be a misunderstanding. It may not be a super spaceship capable of lighting up the entire nebula, but people are just scaring themselves.

There is no need to publicize it and cause civilized chaos until tangible evidence is available.

Thus, without the knowledge of most people, a full-scale war preparation operation began.

More factories were included in the category of military factories, and more people were recruited into the army.Social resources began to be quietly tilted towards the military industry, and social construction activities stopped unconsciously.

Combat readiness operations centered on each dwarf planet, and people began to build electromagnetic gun emplacements one after another and laser cannon bases one after another on various dwarf planets—at the current stage, laser cannons suitable for actual combat have been successfully developed up.

From the perspective of overall strategic thinking, a dwarf planet can also be regarded as a giant space battleship that cannot be destroyed.In future wars, they may have unexpected effects.

In addition to the construction of fixed military facilities, people have also built numerous spy satellites and threw them into space like sand and gravel.In the low-earth orbits of various dwarf planets, people have also built many space fortresses.

The construction of combat spaceships has also entered an unprecedented peak period.Spaceships rolled off the dock one after another, delivered to the military, and then handed over to the soldiers who had already trained in advance, and immediately formed combat effectiveness.

Located in the Jupiter system, the people responsible for providing resource support for Planet Sedna also temporarily slowed down the mission of sending supplies to Planet Sedna, and started large-scale combat preparations.

Under such circumstances, time passed rapidly.In the 13th year after the observation of the "reflection nebula", people have obtained tangible evidence of the mining spacecraft of the Moyun Litar civilization.

Yes, the miracle that people expected did not happen in the end.It was indeed a huge spaceship that lit up that nebula.

Compared with the past, the performance has been improved many times, and the space telescope array that is aimed at that direction day and night, and dare not relax at all times, has actually captured its figure.

Although only one pixel size.

But this also proves it without a doubt.

So, at a time when more and more people have noticed that civilization is quietly changing through the bits and pieces of their lives, Zhao Changxing announced the matter about this spaceship.

As expected by Zhao Changxing, the announcement of this matter immediately caused panic among the civilizations.But under Zhao Changxing's strong suppression, nothing happened.

Life goes on, and so does preparation.

The latest accurate forecast shows that the arrival time of that giant spaceship is about 3 years later.And its orbit has quietly undergone some changes in the past period of time.

At this moment, it will come directly to the vicinity of Sedna Star, instead of passing by 8.2 million kilometers away from Sedna Star as predicted in the past.

This obviously proves that the mining spaceship of the Moyun Litar civilization intends to do what Zhao Changxing said at the beginning, before officially starting to work, it will first destroy the little bugs buzzing next to it.

At this point, people have to lose the last bit of fantasy, the last bit of luck.

Combat preparations are still in rapid progress.At this moment, with Sedna Star as the core, more than a dozen dwarf planets have all turned into war fortresses.Only a dozen new combat spaceships were enough to destroy the original deep space civilization, and now the number has increased to as many as 3000.

At this time, as the distance between the two sides shortened, the space telescope array finally captured the real image of the spacecraft.

It really only has one ship.Its shape roughly presents an irregular cuboid shape, relatively flat.People can vaguely see many protrusions, depressions and ravines on its surface, but no rotating structure.

It seems that it does not rely on rotation to generate gravity.Or, it has no artificial gravity system at all.

Its size is probably as people expected at the beginning, its length is as high as 26 kilometers, its width is 17 kilometers, and its height is about 6 kilometers.

No matter where you look at it, it is a veritable behemoth.

Zhao Changxing once again convened all the high-level civilizations.

"In addition to combat preparations, we need another thing." Zhao Changxing said lightly: "We need a spaceship that is bigger and more advanced than this Moyun Litar civilization, at least a level 4 civilization. Creation ship."

　Happy Chinese New Year 29, I wish you all a happy Year of the Tiger
　　
　
(End of this chapter)