Li Zhonggong said: "There should be no problem in a short time, we plan to install four nuclear fusion reactors with metal hydrogen charges on the spacecraft and use them for water electrolysis." We use this device to electrolyze water into hydrogen and oxygen, which are used as fuel for rocket engines, and then the hydrogen and oxygen are burned back into water, so that as long as the spacecraft carries a large amount of water, it can not only supplement the needs of the astronauts, but also provide nearly unlimited fuel. At the same time, the nuclear fusion reactor is powered by the principle of heat exchange, and the water used to cool the reactor can also push the steam turbine to produce a large amount of electricity after it is turned into steam, so theoretically speaking, as long as the nuclear reactor is still working, the fuel is infinite. ”

Fang Xiaoyu said: "This is really good, but what kind of speed can the spacecraft reach, and how long does it take to reach the earth?" ”

As for Fang Xiaoyu's ultimate goal on the earth, there is already a consensus among the Chinese consortium at this time. Although everyone didn't know why Fang Xiaoyu was so obsessed with this asteroid far away from Wangxiang Star, everyone was willing to work hard for his goal for this beloved Emperor and President.

Because of this reason, when Fang Xiaoyu asked about the earth, Li Zhonggong was already mentally prepared, and he immediately explained: "After the accurate measurement of the space telescope, the earth is only three hundred light years away from us. We calculated that the spacecraft could accelerate to the speed of light before it left the galaxy under the acceleration of this magnetogravitational power system. As for whether it can exceed the speed of light, it is still inconclusive, but the speed of light is fast enough. ”

"Isn't 300 light-years a 300-year walk at the speed of light, which means that it takes 300 years for a spacecraft to reach Earth, which is fast enough?" Fang Xiaoyu also studied physics when he was on Earth, and he still knew this knowledge, so he immediately questioned it.

Bentz, who was standing on the other side, said: "Young master, don't worry, according to the analysis of scientists, the theory of the speed of light is actually different from what we usually imagine. The fastest thing we see in the world is the speed of light, which means that the speed at which time passes is the speed of light. In our calculations, 300 light-years is indeed 300 years, but in fact, although there is no problem with the data, our thinking is indeed wrong. Since the speed of the spacecraft is the same as the speed of time, that is to say, time will not pass during the flight, so although the distance is three hundred light years, it is actually instantaneous, which is the same principle as when our aircraft is flying at supersonic speed, and the roar of the engine cannot be heard, because your speed is fast enough, the speed of sound cannot catch up with you, so you will not be able to hear the sound. ”

"His theory is correct, it's just that astronauts who are traveling at the speed of light stop, and if you're out there, you'll have to wait three hundred years, and their theory is biased and useless." Xiao Feng's voice suddenly sounded in Fang Xiaoyu's mind.

Fang Xiaoyu asked Xiao Feng secretly: "According to what you say, I will not be able to return to the earth in three hundred years, or because of the genetic repair solution, my lifespan is long enough, but my family can't live that long on the earth, what can I do." ”

Xiaofeng replied: "Of course I won't let you return to the earth after three hundred years, when the speed of light is not fast enough, we can use space folding technology, so that we can achieve an instantaneous effect, of course, this technology was not mature in the Earth Federation back then, because the earthlings at that time only mastered space technology, and the knowledge of time was not thoroughly studied, I met you because of the loss of control on the way to space folding." ”

"What is space folding technology? How dangerous is it if we use this technique? Fang Xiaoyu continued to ask.

Xiaofeng replied: "The space folding technology relies on the strong energy gravity to break through the space barrier and build a fast passage between two space points, which we call a wormhole. As long as we pass through the wormhole, we can travel between the two areas very quickly, without spending too much time on the road, of course, there is a small chance of encountering time turbulence in the wormhole, that is the reason for my accident, of course, this probability is very small, through a thousand times will encounter about one or two. ”

Fang Xiaoyu was a little confused when he heard it, he shook his head and said, "I still don't understand what you mean, can you make it easier to understand." ”

Xiaofeng continued: "You can think of space as a piece of paper, where you are and where you are at opposite ends of the paper, so let me ask you what is the closest way to your destination?" ”

Fang Xiaoyu said: "The straight-line distance between two points is the shortest, I have learned this." ”

Xiao Feng said: "That's what you learn on the earth, and the real shortest distance is to fold the paper in half, so that the starting point and the destination are pasted together, that is the shortest, and the space folding technology is actually to fold this piece of paper." ”

Fang Xiaoyu said: "I understand a little bit when you say that, but we can have this technology like this?" ”

Xiao Feng said: "I'm speeding up the unlocking, and it is estimated that I will be able to unlock this technology in half a year, and when the time comes, I will directly manufacture it in the aerospace equipment library and install it on this spaceship, and it will still be in time." ”

Fang Xiaoyu said: "Great, I'm relieved." The dialogue between Fang Xiaoyu and Xiaofeng is in the brain, and the dialogue with consciousness is inaudible to others, but this space folding technology still needs half a year, and Fang Xiaoyu is too lazy to explain to Li Zhonggong now, and it is too late to tell when it is produced, but he began to wonder if he should write a paper on the speed of light and time to correct the fallacies of scientists, so that they can avoid some detours and speed up the scientific and technological development of the China Foundation.

Thinking of this paper, he naturally recommended Einstein's theory of relativity, Fang Xiaoyu secretly sighed, there is an Einstein on the earth is really lucky, and he actually wrote the kind of article that can be called the Bible of science and technology before others can know him, why can't the guy named Einstein under him write such a forward-looking revolutionary paper, is it because he is too much in science and technology to help and stifle the creative talent of scientists.

Regardless of whether it is to pull out the seedlings or not, Fang Xiaoyu must do the same now, because this is the best way for him to return to Earth in the short term. Of course, the thesis needs to be written later, and how to improve the development atmosphere of the scientific community is also a matter for the future, and now he is most concerned about the issue of spaceships. Because he would have to install the space folding device produced by Xiaofeng in the future, he didn't mention the problem of speed again, but shifted his attention to weapons: "Is there any weapon installed on this spaceship?" ”

Li Zhonggong said with a smile: "Of course there are, but they are only some small-caliber electromagnetic cannons and low-power laser cannons, which are mainly used to destroy meteorites, and these two weapons have only been put into practical use for a short time, and larger models are still being tested." ”

Fang Xiaoyu nodded and said: "That's good, but I think you can also add some traditional artillery, after all, the charge used in the shells belongs to the self-supply oxygen form, which can be used in space without oxygen, and without air obstacles, the speed of those shells will be faster, and the trajectory will be straighter, which should also be very useful." ”

Li Zhonggong nodded and said: "I'll think about this, it's just that traditional artillery requires a large amount of ammunition and will take up a lot of space. "Li Zhonggong's attitude towards science is very rigorous, even if it is Fang Xiaoyu's suggestion, he will carefully screen it.

Li Zhonggong's attitude made Fang Xiaoyu very satisfied, and he nodded: "I am looking forward to this spaceship, I don't know how long it will be able to join the active service." ”

Benz, who was on the side, thought for a moment and said: "It will take another year to build, plus a year of testing, and it should be ready for official use." ”

Fang Xiaoyu said: "Great, when he is officially put into use, we will immediately start the plan to return to Earth." ”

Fang Xiaoyu and Li Zhonggong chatted with Benz for a long time, and the hope of returning home made him very excited, and Li Zhonggong and Benz were very busy, they not only had their own research projects, but also had to supervise the construction of this huge spaceship, so they chatted for a while and then left.

After the two left, Tobul and Hua Dong, who had been standing not far away, walked over, and Hua Dongxing said, "Young Master, this spaceship is quite good." ”

Fang Xiaoyu said: "Indeed, very good guy, this was something I didn't dare to imagine back then." ”

Hua Dongxing said with a smile: "Finally, there is a situation that the young master can't foresee, now our equipment is getting more and more advanced, and it has developed to a large spaceship, and the intrigue between the countries on Wangxiang Star is indeed not a big deal." ”

Fang Xiaoyu smiled: "Are you going around the bend to remind me, it's time to take care of Ruijun?" ”

Hua Dongxing smiled awkwardly and said: "The little young master grew up with us, so naturally he has a lot of affection for him, and now that the battle on Wangxiang Star is raging, shouldn't we help him?" ”

Fang Xiaoyu said: "Do you think I really don't care? In fact, I have been paying attention to the war situation, and now Fang Ruijun has done a good job, the Boston Ocean Fleet, which has been completely annihilated by the Imperial Army, has established an absolute advantage in the Eastern Ocean, and the army has also invaded the territory of the Boston Empire, and the war has developed in the direction of the Chinese Empire, so what is there to worry about. ”

Huadong Xingdao: "Although the empire has the advantage now, the direction of the western continent is very difficult. The empire has done its best, and if the war continues like this, it is easy for the national strength to be damaged, and it will be very troublesome to recover after the war. I think the test for the young master is almost over, and now he has shown all the qualities of a Ming Jun, not to mention that there is a parliament to check for him, and there will be no problems in the future. I think the Predators should immediately intervene in the war on the Lookout and defeat the Axis forces as quickly as possible. ”