"I don’t know what you are talking about," Ye Luohui replied.
"For example," Wei Feng said, "suppose we can observe a total of 100 asteroids while sailing in the Oort cloud-you have no doubt about that, right?"
"I have no doubt," Ye Luo said. "Even in such a dark environment, my four telescopes can detect the reflection of similar asteroids at a distance of 500 million kilometers. Now that Oort Cloud is confirmed in Youji, it is not difficult for me to observe 100 asteroids during this voyage."
"Suppose again … that this super alien planet can be found once every 200 asteroids on average. So … what is the probability that we meet a total of 100 asteroids and find a piece of debris made by super science and technology from one of these 100 asteroids?"
Ye Luo quickly replied, "This is a very simple question of probability, and the final probability is 50%."
Wei Feng said slowly, "50% probability … is this still an accident?"
"The probability of 50% is not accidental. This probability is already quite high. Oh, I see what you mean, Captain. You mean that asteroids here are a common phenomenon in alien artifacts. It is likely that many asteroids have such evidence. It is not an extreme coincidence that we encountered such a piece of debris on the asteroid surface this time?"
"I’m sure of this," Wei Feng shook his head. "This is also my guess. After all, what we are encountering now is too coincidental, some coincidences are unbelievable, and if this is not an accident but a high probability event, then this matter has a reasonable explanation."
"So what are you going to do?"
"What I want to do … is very simple," Wei Feng said. "We expect that it will take another 10 to 100 years to sail out of the Oort Cloud category, and if you can find some super alien texts from asteroids in this period, or find similar fragments directly in the universe … this will prove that this is a high probability event."
"But do you know what this means?" Ye Luo said faintly, "Although I am not in the mood, I still think this is a very terrible thing."
"Of course I know," Wei Feng sighed. "If it is a high probability event … it means that this war that happened in the sun 500 to 600 million years ago must have a large wave range, and it must be a huge war."
Chapter two hundred and nineteen Keller died
No matter who evaluates him, he will feel scared and creepy about the fact that "there was a super alien who used the sun as a battlefield 500 to 600 million years ago and fought a long and huge war in the sun", which is completely beyond human imagination and will lead to more other problems, such as "If that super alien came to the sun 500 to 600 million years ago and fought such a war here, what will be the impact on our sun?"
For example, "What have they done to our sun? Or have they done anything to our earth? You know, at that time, the earth had a simple life, so what role did they play in the emergence of us humans? Are we … connected with them? "
Any one of these things is enough to have a great impact on the values and worldview of modern human culture. If it is finally concluded that human culture is just the rest of the culture spreading life, or it is an experiment, then many people’s worldview will collapse or just ask this question without saying these things. "Are they still there?" What level of technology have they reached now? Are they … still spying on our humanity? "
It can be predicted that if this event is published in the human civilization, it will be as powerful as exploding a nuclear bomb in the capital of the earth, conspiracy theories will prevail, religions will be revived, people will become nervous, and society will be in turmoil … All this stems from this event, that is, there was a super alien who had a great war on the battlefield of the sun 500 to 600 million years ago.
This matter is like a heavy stone on Wei Feng’s mind. Wei Feng is eager to understand what this is all about, but it can’t be rushed. The most likely situation is that the truth will emerge until Wei Feng exhausted his life because of the whole humanity.
That’s a long time of hundreds of millions of years … anything can happen in such a long time. Even the human language has written down the history thousands of years ago. How can it be simple to figure out something that happened hundreds of millions of years ago?
Quiet returned in the control cabin. Wei Feng looked at those things in the real sealed box for a long time. His eyes were long. Wei Feng waved and said, "Put these things away and keep them well. If we can return to Earth one day, we will hand them over to the government for study."
"Good" Ye Luohui replied, manipulating the robot to put away the sealed box and then asked, "Do you want to read the letters sent to you by the earth now? Or … do you need a rest? "
"Make me something to eat," Wei Feng said. "Then I’ll have a good rest-I still feel a little uncomfortable."
"Good captain, you may feel better if you can have a quiet sleep," Ye Luo said.
Hibernation is not the same as sleep. Sleep is rest. Hibernation is similar to suspending all physiological processes of the human body. Obviously, it has no resting effect. If it has been hibernating for a long time, it will bring serious damage to the human body.
Wei Feng ate something and then arranged to lie down in a soft and comfortable big bed in the leaves, and quietly fell asleep in the only oasis in this dark and far-reaching universe.
After waking up, defender Feng felt that his state had recovered a little, and after some recovery exercises, Wei Feng came to his personal brain during the break and typed those letters sent from the earth.
At the moment, it has been more than 20 years since Wei Feng left the earth. The Xinghai spacecraft has sailed nearly 2 trillion kilometers, which means that it will take almost two months for Wei Feng to communicate with the earth in one way, and it will take four months for a question and answer.
Wei Feng didn’t expect that those letters were sent by his "classmates", who were keeping their promises. A bystander recorded the events that happened in human texts and sent them to Wei Feng.
The first letter was in response to my own reply ten years ago. This letter didn’t specifically describe anything. Wei Feng read it and put it behind him. There were seventeen letters. Except this one, the other sixteen articles recorded some important or similar anecdotes, but two of the sixteen things caught Wei Feng’s attention.
"Wei Feng, do you remember the situation when the Xinghai spacecraft set sail? At that time, almost everyone in Wen was watching us, and our every move touched people’s hearts, but I have to say that we humans are good at forgetting race, and all information, no matter how exciting it is, is time-sensitive for the public. After this period, no one will pay attention to it again. Unfortunately, our island plan has not escaped this fate, and people are gradually forgetting that not many people remember that a spaceship left our hometown star and embarked on a long interstellar journey alone more than ten years ago. "
"I feel very sad that we have devoted our lives to this project, but the end result is that people are gradually forgetting us. I am afraid that if we are completely forgotten after hundreds of years, no one will pay attention to us and no one will remember us. What will become of our fate?"
This is indeed a very sad thing, but Wei Feng has long been psychologically prepared to face this situation. Wei Feng never expected that he would be remembered by people, but when this really happened, Wei Feng still felt a little sad.
Wei Feng left his seat with a sigh and came to the ship’s porthole and looked at the bright star in the distance through the glass. Wei Feng knew that there were hundreds of billions of his own kind living around that star, where he was born and lived, and where all his memories were held. Whether this memory was warm or cold, whether it was joyful or sad, it was all there.
Now I am two trillion kilometers away from there, and it takes four months to communicate with the earth once, and this distance will continue to expand as time goes by. It is always dark and empty here, and there is always a person who cares about himself, but people there are forgetting themselves.
"When I left the earth, when I stepped into the hibernating cabin, I was doomed to be forgotten. They can enjoy this era to the fullest, but we travelers can blend in from a bystander’s point of view, but … someone always has to bear the responsibility, right?" Wei Feng silently said this to himself and then returned to his seat again.
There are only two short sentences left in this letter, the first paragraph of which is "fortunately, the society has not changed much, and everything we are familiar with is still here, and we have not been abandoned by the times for the time being"
There is a sentence in the second paragraph, "Oh, yes, Keller is dead. It is said that a meteorite attacked his car, and he and his entourage were all killed."
The letter ended here, but there was a ripple in Wei Feng’s heart
Keller was the head of state who was determined to carry out the island plan. It has been almost forty years since he discharged the head of state. Wei Feng also heard about Keller’s post-discharge life and knew that he became an artist and had high hopes in human society.
The description of Keller’s death in this letter is very simple, just like casually mentioning whose pet died in small talk, but Wei Feng felt a little unusual from this simple description.
Meteorite attack … Is it possible for human beings to destroy a spaceship in this way?
Wei Feng felt sorry for Keller’s death, but at the same time he felt a little confused. There seems to be a lot of things behind this matter, but Wei Feng is not a politician. The sense of isolation brought by reading more information from here and the distance also made Wei Feng feel that Keller’s death seems to be a distant thing.
It was a thing that happened in a distant hometown. What does it … have with itself now?
Wei Feng shook his head and threw it out of his mind. Even if it was unusual, it was not that he could intervene. He was just a time traveler who was about to be forgotten.
The second letter was sent by Chu Hai three months ago. Of course, I just received it a month ago because of the communication delay.
"Hello, Wei Feng, I’ll tell you an unfortunate thing. Recently, a scientist claimed that the speed limit of a conventional thrust spacecraft is 1.5 percent of the speed of light, which is 4,500 kilometers per second. Although this conclusion has not been recognized, many scholars have supported this conclusion."
Chapter two hundred and twenty dozen deathless knot
The definition of conventional propulsion mode is actually very simple, that is, it can be widely used on a large scale, just like the propulsion mode in which the fusion engine of Xinghai spacecraft heats the working medium and then ejects it.
Conventional propulsion mode corresponds to unconventional propulsion mode. Most of these propulsion modes are still in the stage of imagination, and there are many whimsical methods, such as throwing a nuclear bomb behind the spacecraft every second and exploding it with the radiation pressure of the nuclear bomb to propel the spacecraft. These propulsion modes have one thing in common, that is, they are only limited to extremely special environments, and they can overcome the needs of large-scale interstellar transportation.
The only alternative to long-distance interstellar navigation is conventional propulsion. The reason is simple, because in the future, a large spacecraft with hundreds of thousands of people or millions of people will need to constantly throw nuclear bombs to propel this kind of thing. Everyone can imagine it.
In the field of interstellar navigation, it is not feasible to take a slant on the sword, and the only feasible way is to honestly develop basic science and technology and develop conventional propulsion methods
But … Chu Hai now tells Wei Feng that some scientists have proved from theory that the speed limit of conventional propulsion mode is 4,500 kilometers per second. Although this theory has not been universally recognized, it already has some supporters.
This made Wei Feng once again have a ripple in his heart
"The scientist demonstrated this topic from the aspects of material science and technology, specific impulse, fuel and working medium mass, total mass ratio of spacecraft, sailing distance, basic theory, etc. His conclusion is that if we make a breakthrough in basic theory, we can reach the speed limit of 4,500 kilometers per second by conventional means. If the speed of a spacecraft exceeds this limit, it will drift in the universe and stop forever. All people born in this island will be trapped and die here because of fuel exhaustion," Chu Hai wrote in the letter.
"Some scientists pointed out that there is a loophole in this theory. The scientist retorted that if the speed of a ship only depends on these factors, then people can build a very big ship, such as a giant ship with a length of 10 kilometers and a height of 1 kilometer, and then in this giant ship, 10% of the fuel is piled up everywhere, and 10% of the local residential areas. Even so, at least 10,000 people can live in this ship for thousands of years, and those fuels are enough to accelerate the ship to 4% of the speed of light. Ten is the speed of 120,000 kilometers per second. After the fuel of the giant spacecraft runs out, we don’t have to slow down the whole spacecraft. We have to separate the human area from the spacecraft and then slow down the human area. Because the whole spacecraft has a small mass compared with the human area, the deceleration of the human area also needs to consume limited fuel, which can break the saying of’ conventional propulsion speed limit’. "
In this way, it will take us eleven years to send ten thousand people from the sun to Nanmen two stars.
Seeing this, Wei Feng frowned slightly. Wei Feng didn’t know whether the conclusion of "conventional propulsion speed is limited to 4,500 kilometers per second" was right or wrong, but Wei Feng knew that this method to refute the conclusion must be wrong, and it was also in a huge loophole.