Facing Yi Feng's questioning, Hei was suddenly shocked in his heart, he really didn't think of this just now. Ｘ

He hurriedly spoke: "Yes, you are right, the Noah is indeed amazing good garbage...... Oh no...... It's an amazing goodie. ”

"There is subspace technology, artificial gravity technology, a very large reserve capacity and a good living environment...... It is the best ship. ”

"I suggest that until we reach L4 or even L5, it's better not to be exposed!"

As soon as he finished saying this, he immediately added: "I'm sorry, I didn't think it through just now. A single Deep Space number is still too thin, so I suggest ...... Develop more corvettes now! ”

"The frigate can carry a large number of space weapons to protect the ...... Deep Space"

"It doesn't need to be very large, it can have a driver or an unmanned driver, but it has to have enough firepower...... 1,000 or even 10,000 is not too much! ”

This black seems to have completely taken on the role of a human being, and shouted feverishly.

Yu Yifeng didn't immediately reply to Hei's suggestion, but asked calmly: "But the Noah is now wrapped in the Deep Space, and it doesn't show the slightest shadow, so others shouldn't be able to find out, right?" ”

As for the frigate, it is already in the people's planning......

Now that Deep Space has been completed, a lot of industrial capacity has been freed up, which will be used to build more small frigates.

Of course, the more weapons the better, and the stronger the better!

Hei shook his head and said worriedly: "It's not safe to be wrapped in Deep Sky, it can only prevent some ordinary electromagnetic wave detection." ”

"But the more advanced destroyer civilization may have developed the means of neutrino detection."

"Neutrino detection, you can easily find the hull of the Noah wrapped in Deep Space! Therefore, we must develop some counter-investigation means as soon as possible, and at the same time constantly strengthen our own armed forces. ”

Yu Yifeng frowned and thought about it, with neutrino detection methods, at least humans can't do it at all......

Neutrinos are small, uncharged elementary particles that interact weakly with other matter and are widely found in nature. Its peculiarity is that it is very, very penetrating and can easily penetrate the entire planet! And of course, the deck of the Deep Space......

He asked again, "So...... What is the Destroyer Civilization? ”

This is a question that has been bothering me for a long time, because the original green light people were beaten half to death by such a civilization, and finally detonated the sun in desperation.

He smiled wryly: "As the name suggests, it is generally referred to as a civilization with strong attacks, and there are three categories in total. ”

"First, civilizations with certain bandit traits, they like to rob civilizations that are weaker than it...... Different interstellar civilizations are complex, and many civilizations don't mind being robbers if some special reason arises. ”

"You know, it's not just the galaxy, it's the entire universe that's filled with all sorts of junk from higher civilizations...... Maybe the so-called god-level civilization discarded it at will, anyway, I don't know what the reason is. ”

"This garbage is also of high value to interstellar civilizations...... For example...... Noah? ”

Yu Yifeng nodded, his heart became more and more weird, the universe was full of high-grade garbage? Bandit?

The original Destroyer civilization just wanted to rob the neutron star fragments of the Green Light People?

Black continued: "Second, there are interstellar civilizations that have developed from war, and this civilization is even more terrifying than bandits! ”

"Their mode of thinking is completely different from that of normal civilization, and they even believe that the meaning of the existence of war itself is to promote the development of civilization......

So, this civilization will keep waging wars to increase its internal impulses...... Because of the long-term existence of the existential crisis, this civilization has developed very rapidly...... But if there is no war, they will decay for some internal reasons......"

"There's a third group, certain silicon-based civilizations, whose way of thinking is...... Profit first! For them, 1.01 is definitely greater than 1, so they must choose 1.01. ”

"According to this line of thought...... If the benefits of eliminating the other side outweigh the risks they may bear, then they will attack. For this kind of civilization, it will always pursue the greater good, and it is also very dangerous. ”

"These three aggressive civilizations are collectively known as the destroyer civilization."

"It's okay for robbers to be scared away, but the latter two are very dangerous...... Their thoughts are inexplicable and not something we can understand. ”

Yu Yifeng was silent for a long time and then asked, "Are there many of them?" ”

"Also, if interstellar civilizations exist, why hasn't the galaxy been fully occupied?"

"Quantity, not a lot...... In the vast galaxy, if you don't go to the center of the galaxy, it is not easy to meet an interstellar civilization. ”

Black immediately replied, "As for the latter question...... Captain Yu, the expansion of interstellar civilization is not unlimited, and it will also encounter a series of development pitfalls. Not every civilization will always be strong and develop. ”

"Nothing lasts forever, not even the universe."

"Oh?" Yu Yifeng was a little puzzled.

“…… There are many reasons for this, and they are very complex, and they are something that every interstellar civilization needs to ponder. Faced with this question, Hei Tu said in a huff.

He felt that he couldn't say it clearly for a while: "Including but not limited to...... The mutual constraints between interstellar civilizations, interstellar wars, the law of increasing entropy of civilizations, some internal depravity factors, information speed barriers, population traps, etc., all restrict interstellar civilizations from expanding their territory. ”

"Many civilizations have invariably opted for a small population and a high-quality elitist strategy. Similar to ours, of course, our population is still too small. ”

Seeing Yu Yifeng's thoughtful appearance, Hei said again: "Moreover, from the L2 level, the interstellar civilization has an excellent life-saving means curvature engine!" ”

"What if...... I mean, if we're unfortunate enough to encounter the Destroyer civilization, we can escape beyond the speed of light as long as we deploy the curvature engine! ”

Hei made a gesture and said with some exaggeration: "Only extremely high-level interstellar civilizations, L7 or L8, have the means of detection beyond the speed of light!" ”

Because of the curvature engine, after distorting space, the spacecraft can easily exceed the speed of light.

However, whether it is electromagnetic waves, gravitational waves, neutrinos and other detection methods, they are still at the speed of light, and if they can't catch up with spacecraft faster than the speed of light, they can't be detected.

As a result, it surpasses the speed of light and becomes the best protective barrier for low-level interstellar civilizations...... This is the shackle of complete theory.

“…… And the means to detect faster than light? Isn't that really a violation of the theory of relativity? Yu Yifeng asked curiously: "Is it possible to use curvature space for detection?" Space can move faster than the speed of light......"

"This, I don't know......" Hei shrunk his neck, he didn't know everything: "Then again, I've been dormant for millions of years, maybe during this time, the galaxy has changed ......"

The two of them were silent, and the amount of information in this conversation was very large, which gave Yu Yifeng a preliminary understanding of the Milky Way.

After a long time, Yu Yifeng spoke up again: "What do you think, what is our strength?" How are civilizations classified? ”

Taking advantage of this opportunity, he simply asked all the questions in his mind clearly.

According to the current strength of human beings, it is not a problem to crush K-level civilizations, including the previous earth civilizations, with the current huge industrial strength, they can be easily crushed.

But Yu Yifeng didn't know whether human beings were ranked first in the interstellar civilization.

Judging from the information available so far, human beings can't defeat the Green Light People, the destroyer civilization behind the Green Light People, and the civilization where the black used to be......

Looking at it this way, is it still the lowest interstellar civilization?

Hei smiled and said: "Captain Yu, you don't have to be too anxious, our potential is still very large, with so many elites and brain chips, at least it will be smooth sailing before the L4 level...... Even a breakthrough to L5, L6 is possible. ”

"At least our social system, civilized goals, and civilized will are very healthy!" r