"Grandpa Kong, tell me about your experience! How did you get here, and how did you sail the Earth at that time! In fact, there is a record in the history of your voyage, but the history is certainly not as accurate and true as the narration of those of you who witnessed it. ”

After telling so many of our stories, I finally had the opportunity to ask questions, and they all said that truth is often drowned in the long river of history, but now that there is a living historical figure in front of me, how can I not seize this opportunity.

The old man nodded, leaned back in his chair, fell into deep thought, and spoke slowly.

We set out from the earth in 2700, and at that time, we earthlings have often mastered the sub-light speed navigation technology, with a speed between 0.8~0.9C, and the accurate year of our constant grasp is 2628. That year, the scientists of the earth gathered the strength of the whole world to build an unmanned test ship "Trail Blazer", which finally succeeded in reaching 0.86C. After the success of the sub-light spacecraft test, there was a controversy within us at the time, some people advocated building a large spacecraft to explore the universe immediately, while others believed that the current technology was not perfect enough and advocated that the voyage should be carried out only after it was perfected.

There was a big reason for the opposition at that time, that is, there was too little fuel for sub-light flight, and the savings of mankind for decades were enough for such a long voyage; Another reason is that people need to be frozen and dormant when traveling at sub-light speeds for long periods of time. With the technology at the time, it was necessary to wake up every 5 years, and it took at least a month to live a normal life before the next hibernation could occur. Otherwise, there will be a large decrease in the body's muscle energy.

At that time, some people put forward the hypothesis that when the speed of the spacecraft increased to the speed of light, there might be a light change, and then there might be a time delay, and the human body might not need to go to sleep. After all, dormancy still has a great impact on the human body, it will reduce our ability to react, and the body's resistance to germs will also be reduced. On an exotic planet, the human body may develop unknowable diseases. Those who put forward the hypothesis pointed out that if there was a light variation, it would be a natural phenomenon and would not be harmful to the human body, and that it would be more advantageous to wait until the speed of light had been held before exploring the galaxy.

Hearing this, I couldn't help but applaud this ancestor. After reaching the speed of light, it does produce a photochange phenomenon, between the speed of 1C~36C, its photochange effect is 36 times, that is to say, if you sail for 36 years, the physiological reaction is only one year, or the ratio of physiological time to actual time is 1/36. For example, at the speed of 50C, the photochange effect is 50 times, but the maximum photochange effect is only 365 times, and the maximum light change effect is 365 times, and more than 365C is also 365 times.

The photodynamic effect produced by the speed of light does not mean that the time is really shortened, but because in the superluminal environment, the molecular structure of the entire organism is affected by the Flatt effect and the so-called photodynamic effect, and its activity becomes extremely slow, so that the life of the living body is extended. The old man continued to talk eloquently, and I couldn't bear to disturb him, so I didn't interject.

After arguing for several years, in the end, the proponents of the voyage prevailed, after all, exploring the universe is a long-standing pursuit of human beings, and many people hope to enjoy the exotic scenery in their lifetime. Finally, it took people another few decades to build a "Galaxy One" with the most advanced technology at that time, and selected a group of young people who often knew a variety of disciplines and had excellent physical fitness to start sailing. Due to the size and energy of the spacecraft, 328 people were chosen, and I was one of them.

The old man's eyes lit up as he said this, and it was evident that it would be an extremely honorable thing for him to be chosen, and he looked at us and continued, while we continued to listen.

We have been flying for 976 years, and in 3676 we came to the Green Star, and it has been 122 years now. During the flight, we used interval cryo-dormancy technology, 328 people were divided into 60 groups, and each group rotated on duty every 5 years of dormancy, and each shift time was one month. In this way, 976 years have passed in the outside world, and our biological age has passed less than 20 years. When we arrived here, we chose this place with mountains and rivers, and slowly lived here.

The old man paused at this point, and seemed to think of something again.

"Grandpa Kong, I heard Sihan say that there seemed to be only more than 200 people after you arrived here at that time!"

"More than 200 people!" The old man's voice suddenly became louder, and his eyes were full of vicissitudes and slightly displeased when he looked at me. I couldn't help but shudder a little, and immediately turned to Hongyin and Luo Hao for comfort, did I say something wrong? Hongyin and Luo Hao were also very uneasy, and the eyes of the three of them were full of puzzlement.

After a long while, the old man finally regained his composure, and muttered, "More than two hundred, yes! There are only 252 people left! ”

"Grandpa Kong! What's going on? ”

Hongyin asked in her feminine pleasant voice as much as possible, and she also noticed the old man's excitement, revealing an extremely rare smile, different from the usual peaceful smile but with a somewhat charming appearance, but this kind of charm does not look bewitching, but makes people feel very pleasing to the eye. This different moment stunned me and Luo Hao.

The old man seemed to be infected by her voice and smile, and looked at us kindly and said, "After we got here and got off the ship, something terrible happened. Within three days, 68 of our team members suddenly fell ill, and many of them were confused, and many of them were useless, and finally left us. We only had 252 players left, and in three days we lost 20% of our personnel, which was a huge loss. And in the next exploration of this planet, we lost 5 more team members, and only 247 actually started to live on this planet. After more than 100 years of development, there are now more than 2,000 people, divided into two residential areas, one here and the other about 10 kilometers away from here. When we arrived at Green Star, everyone was very excited at first, and when we arrived at a new environment, a new planet, how happy we were! But as time goes by, the old people who came at the beginning actually regretted it, no matter how good a planet is, it has its own home planet, the earth is beautiful, only those who were born in the green star regard this place as their home, and we still want to return to the earth if we have the opportunity. It's good that you're here, so we have a chance to go back. ”

"Is there anything terrible on this planet?" Luo Hao asked inopportunely, he should have wanted to ask how the five team members died.

"Well, I guess there is! Didn't you run into man-eating grass and prolonged nose pigs! The animals and plants of this planet have been analyzed and classified by us, and there are two main categories that are particularly threatening to our survival. The forelimbs or head of the extensor phylum have a special structure that will suddenly reach out to attack the enemy, as is the case with the extensive nose pig. There is also a small carnivorous dinosaur similar to the ancient times of the earth, their height is about two meters and a half, and their forelimbs have sharp claws, which are very terrifying. While exploring the Green Star, we were hit by a massive animal deafness, and all 5 members of the team who died were killed in the attack. ”

"Massive animal deafness!" When I heard this, I couldn't help but get nervous, knowing that there were not many people on the other side of the treehouse and there were not many weapons, and it would be very difficult if there were a large-scale deafness attack by animals.

The old man saw our nervousness and smiled: "This is what happened at the beginning, and I remember that after we came here for a month, it was basically gone. Later, when we built our home, we were even more afraid. ”

"But as far as I know, it's generally impossible for animals to attack humans on a large scale, unless something very special happens. Grandpa Kong, did you do anything special at that time? I frowned, thinking to myself that I should never have an animal attack on the treehouse while I wasn't there.

"We are also very strange how animals can attack us on a large scale because they act on instinct. At that time, it was several days of continuous attacks, and if it weren't for the fact that we had just arrived at Green Star, we were extremely vigilant, and everyone was extremely careful and carried weapons, otherwise we would have died after a long time of vigilance. ”

The old man was still immersed in painful memories: "We have not been able to find the reason, but at that time we were sure that we had done absolutely nothing bad for the animals, and there were no signs of the attack, as if nature did not like us and let the animals drive us away." ”

The three of us looked at each other, and that was the first strange thing we heard here. I looked at the old man who was still contemplative, wanting to liven up the atmosphere, and my head turned to think of a topic.

"Grandpa Kong, how old are you now?"

The old man obviously recalled: "I was born in 2649, and I am 1153 years old according to this calculation, but excluding the dormancy time, my real biological age should be about 193 years old." ”

"But as far as I know, the average life expectancy of people more than 1,000 years ago was about 160 years! And grandpa, you still look tough. ”

"That's true, I may not have seen you anymore, but there is a strange phenomenon on this planet, that is, when people come here, the speed of physical aging will decrease a lot, about 40% of the speed, that is to say, 160-year-old people can generally live to about 267 years old, which is measured by our body aging instrument."

"It's amazing, do you know why?"

"I don't know, maybe it has something to do with the magnetic field, the magnetic field of this planet is much stronger than that of the earth, but maybe it has nothing to do with this, in short, I haven't found any reason for it at present." The old man shook his head with a smile and said, "It's also because of this that I can live a few more years, otherwise I won't see you." ”

After a while, the old man asked me again: "Xiaosu, how old are you Hongyin and Luo Hao?" ”

"I was born in 3756, and I also have two ages, the age of age is 42 years old, and the age of birth is 38 years old." I replied.

"The age of birth is the biological age, so you also have 4 years to spend in the light change time of sailing."

"Yes."

"My age is kept secret for the time being." Hongyin curled the corners of her mouth and said mischievously.

"I was born about 160 years old, and I was 660 years old." Luo Hao raised his eyebrows and smiled.

"Ahh My eyes widened, Luo Hao's age was even older than Lao Maidu, which was too surprising.