Beneath Deep Space

Okay, now the problem comes back to the explosion of the earth.

If it is true that Noah's civilization destroyed the earth due to various conspiracies, according to Rimbaud's logic, human civilization may really have passed the Great Filter and become a rare civilization in the universe...

But what civilization destroyed the earth? Obviously, the scientists here have no answer.

Scientists have been analyzing the explosion of the earth for a long time, and they only know that it was probably an alien civilization that destroyed the earth, rather than any natural phenomenon.

As for what civilization destroyed the earth, we can only say that we don’t know. Humans have never even seen a living alien civilization...

For a moment, the entire venue fell silent, and everyone didn't know what to say for a while. People's understanding of the universe is really too little.

"Okay... everyone, let's not consider the issue of the explosion of the earth for the time being. Regarding the Great Filter theory, I will talk about the remaining few points." Heigl was the first to break the silence, "And these few points, we humans are temporarily It has not been crossed yet. If any of these are true, then this terrible big filter is still ahead of us..."

The optimist Rimbaud has finished his point of view. It is the pessimist's turn to come on stage, and Yu Yifeng is also waiting quietly.

"First, the difficulty of interstellar navigation technology is likely to exceed human imagination."

"Interstellar navigation requires first accelerating the spacecraft to sub-light speed, which requires a large amount of energy. Controlled nuclear fusion technology is only the first step. Only controllable nuclear fusion technology can provide so much energy.

Secondly, the spacecraft itself requires a large number of new materials with excellent performance, and the long voyage time also requires large-scale hibernation cabin technology and so on. Perhaps, some of the technologies here are extremely difficult..."

"Because various technologies for interstellar navigation are very difficult, each civilization is trapped on its own planet. Just like us humans, we will never be able to cross out of the solar system... I think this is a possibility of the Great Filter. "

The atmosphere of silence was slightly broken, and the scientists began to discuss in low voices. For humans, almost all interstellar navigation technologies, including engines, materials, energy, etc., are not up to standard.

If there are barriers to science and technology, and almost all civilizations are blocked by these barriers, then the possibility of interstellar navigation will be greatly reduced.

"No, Professor Heigl, I think differently!"

It was Dr. Rimbaud, and he jumped out again: "In addition to sub-light speed spacecraft, different civilizations can also send electromagnetic waves, or send unmanned detectors and other means. These things will not disappear in the universe for millions of years. , shouldn’t civilizations communicate in this way?”

"Why have we never found out? Can you explain?"

Heigl thought for a moment, gestured with his hand and said: "If you want to ask why people have not received extraterrestrial electromagnetic waves? I think it has something to do with the nature of electromagnetic waves."

"No matter how powerful the emission source is, the intensity of electromagnetic waves will attenuate with distance, probably in an inverse proportion. Moreover, the universe is filled with a large amount of electromagnetic radiation, and alien electromagnetic waves are likely to be interfered with, making it impossible for human instruments to distinguish come out.

I believe that our human civilization has probably received electromagnetic wave greetings from alien civilizations, but has missed these opportunities because these electromagnetic waves are too messy or too weak in intensity. "

"After all, electromagnetic waves are still not suitable for long-distance transmission. Unless their electromagnetic wave emission power is the same as that of a star, but this is impossible."

This explanation is quite reasonable. Light is also a type of electromagnetic wave. Even if it is a powerful star, it can only reach a few stars on the earth, let alone instruments with a power of only a few kilowatts. Even if the power of these instruments is amplified 10,000 times, they may not be able to receive it.

"So, what about the unmanned detector? The unmanned detector will not weaken. How should we explain it?" Rimbaud asked unconvinced.

Hegel thought for a while and then said: "The unmanned probe you mentioned has a similar problem. Its flight speed is slow and it may take millions or even tens of millions of years to fly to another star. "

"However, the number of such unmanned detectors launched by humans is too small. I have not made statistics, but I think there are only a few hundred in total."

"After millions of years of sailing, these unmanned detectors have long since run out of power. They can only rely on inertia to drift in the universe. They may have collided with meteorites or fallen into some ordinary planet. All kinds of accidents have happened. possible.

Even if it is extremely lucky and happens to pass by a living planet, because it is a dead object without electricity, it may be regarded as space junk or a comet and simply ignored..."

"Therefore, each probe has a very low probability of being captured by an alien civilization, one in a billion, one in ten billion, or less?"

“If all civilizations are like us humans and launch hundreds of detectors aimlessly, then our earth civilization has only a very low probability of receiving these detectors.

Of course, if they launch hundreds of millions of detectors every year, then there is a high probability that they will be discovered by humans. However, launching hundreds of millions of detectors every year is almost impossible from an economic perspective. "

"This is my explanation." After Heigl finished speaking, he looked at Rimbaud quietly.

Rimbaud thought for a long time, finally sighed and sat down heavily. For a moment, he was unable to refute. This statement should also be reasonable.

Hearing Heigl's words, Yu Yifeng felt so stuffy that he couldn't breathe.

If there are many civilizations that have evolved wisdom in the galaxy, but because they are too far apart, they are trapped on their own planets and can never communicate with each other. That would be too sad and cruel...

The universe is really cruel...

Yu Yifeng suddenly thought of that pitch-black space, that dim starlight representing human beings, was really too small and too weak...

The smallness of civilization compared with the vastness of the universe is really shocking and despairing. Fortunately, Professor Heigl’s statement is just a conjecture and may not be true.

When everyone was silent, Professor Heigl spoke again: "This is the first possibility I mentioned, technical barriers. There is also a second possibility: destructive technology."

"The ocean of truth is endless, and we humans are like children picking up shells on the beach. For the sake of clarity, I divide the shells into three categories: 1. White shells represent technologies that are beneficial to mankind;

2. The red shell represents technology that may destroy mankind;

3. The black shell represents technology that has a high probability of destroying the world. "

"Although we all want to pick up white shells, this process is random and completely uncontrollable. So far, most of the shells we humans have picked up are white, but we have also picked up red shells. "

"This red shell is a nuclear weapon!

Nuclear bombs are fully capable of destroying human civilization, but fortunately, we humans are relatively restrained and have not been completely destroyed. So, it's just a red shell. "

"But what if we pick up a black shell? Facing such black shells, where will we humans go? Will we be destroyed?"

"Perhaps, most of the more developed intelligent civilizations have been destroyed by black shells. Therefore, this is also a possibility of a big filter..."

Heigl's series of questions made Yu Yifeng's hair stand on end. What the hell, the universe is too dangerous. It is really in crisis at every step. It is not an exaggeration to say that it is a mountain of swords and a sea of ​​fire. Even the patron saint of mankind - "Technology" "It may backfire at any time!

But what Heigl said does not have any major logical flaws and is reasonable...

So, what are the black shells? Is it possible for humans to bypass them?

Some people speculate that it is a biochemical virus or bacteria, a disease that no one is immune to. It could be some kind of zombie virus, or it could be mutated HIV, etc... Anyway, it sounds a bit fantasy, but these are all possible...

Some people also speculate that it is artificial intelligence.

The danger of artificial intelligence is that it is completely uncontrollable and unpredictable. Many people believe that once artificial intelligence that can truly think appears, it will bring catastrophe to mankind, and they can wipe out mankind in minutes.

Others speculated that it was nanorobots. A self-replicating nanobot that, if left unchecked, would multiply itself exponentially. Then... they will consume all the resources of the entire planet within a few days!