After having the "Village" class nuclear fusion-powered spacecraft Hope, Xiao Yu really realized the convenience brought to him by Jishu's progress. When Hope was initially designed, it was designed according to the dual-purpose model of interstellar space and near-earth space, so that whether it is launching satellites or transporting materials between stars, it is dozens of times more convenient and faster than before.

At least, using Hope to launch eighteen satellites around Saturn saved Xiao Yu the huge amount of materials needed to make eighteen rockets.

After making up his mind to make signal coverage for the entire Saturn system, Xiao Benyu increased the speed of making satellites. Now Xiao Yu has completed the accumulation of the foundation, in addition to the relative scarcity of titanium and zirconium, on Titan, a total of ninety-three bases are producing huge amounts of materials all the time, inexhaustible, with these sources of materials, Xiao Yu can already start the development of new Jishu with peace of mind.

Countless robots are busy, and as long as they have enough energy, they will never get tired and will not ask for a break. Thanks to the hard work of these efficient construction workers, satellites were built one by one, and Hope was responsible for transporting them to the right locations.

Titanium zirconium collection has officially begun. In addition to the basic communication function, these satellites manufactured by Xiao Yu also serve as the function of searching for the two elements of titanium and zirconium.

Xiao Yu added extremely sensitive elemental analysis instruments to these moons, and Xiao Yu believed that as long as these two elements existed in the Saturn system, they would definitely be found by himself.

It took Hope three months to put the nearly 80 satellites into orbit one by one. Since there are no stable Lagrangian points in the Saturn system, all but seven of these moons orbit Saturn.

At this point, the entire Saturn system has been completely covered by Xiao Yu's signal, as long as it is within the Saturn system, as long as it does not enter the interior of the star, no matter where the Hope is, you can contact Xiao Yu.

The entire Saturn is a huge system, and before the destruction of the earth, mankind has already discovered that the entire Saturn system has at least sixty-two moons. After Xiao Yu was stationed on Titan, he found many other rocks orbiting Saturn, but these stones were too small to be regarded as meteorites and could not be called satellites.

Of these sixty-two satellites, only seven have sufficient mass to reach hydrostatic equilibrium. That is, only seven satellites are spherical.

The so-called hydrostatic equilibrium means that when the star reaches a certain mass, its gravitational force will tend to an equilibrium, and in order to achieve this equilibrium, it will inevitably form a spherical shape. This is also the reason why all the large stars discovered by Weishenme are spherical or nearly spherical, and only asteroids have irregular shapes, because they do not have enough mass.

These seven Saturn moons are the objects of Xiao Yu's key search, and seven satellites have been specially launched into orbits orbiting them. The remaining small satellites, Xiao Yu commanded the Hope to embark on a tortuous journey, visiting them one by one.

But the result disappointed Xiao Yu. It seems that when the gods in the underworld created the Saturn system, they forgot to add titanium and zirconium, and Xiao Yu searched the entire Saturn system, but found no trace of these two elements.

In fact, it cannot be said that it has not been found at all, but the point found has no mining value at all, the reserves are low, and the mining is difficult, and finding it is equivalent to not finding it. After three months of searching, Xiao Yu wisely abandoned the idea.

Well, there are only two options left. The first is to develop to the inner planets, to Mars or the original Earth's orbit, and the second is to develop to the outer planets, to Uranus and Neptune.

After weighing the pros and cons, Xiao Yu chose the first option. The reason is very simple, Neptune's orbit is 1.4 billion kilometers from Saturn's orbit, and the Earth's orbit is 1.3 billion kilometers from Saturn, which is not too far away, and even closer to Earth. In the Earth's orbit, Xiao Yu can be sure that there are a large number of titanium and zirconium there. This has long been discovered by proto-earth humans. Neptune, although it can be replenished with fusion fuel, whether these two elements exist in Neptune still needs to be explored.

"Okay." Xiao Yu sighed and began to make a return to the earth.

But this jihua has a big difficulty. That is, the distance is too far. It is so far that even if it travels at the speed of light of radio wave signals, it will take more than 70 minutes to complete, that is to say, Xiao Yu sent a signal to Hope in Earth orbit on Titan, and Hope will not be able to receive it until more than 70 minutes. This is unacceptable to Xiao Yu, who pays attention to absolute control. Moreover, without Hope, the Saturn system, and the like, it is impossible to carry out daily tasks such as launching satellites and repairing satellites.

But if Xiao Yu leaves the main base of Titan and follows Hope to the Earth's orbit, the construction on Titan will fall into a complete halt without Xiao Yu's presiding. This is also something that Xiao Yu is unwilling to accept.

"I don't know when it will be developed." Xiao Yu sighed. Now Xiao Yu is very eager to get ultra-distance communication technology.

The so-called over-distance communication, as the name suggests, is communication that transcends distance, also known as real-time communication, that is, no matter how far the distance is, the communication between them is real-time without delay.

This kind of technology has been studied by many people on the earth, and the most promising breakthrough at present is to realize ultra-long-distance communication according to the quantum entanglement effect of quantum mechanics.

However, this technology is still theoretical, and it cannot even be done in the laboratory, let alone applied in reality. Now Xiao Yu has no way to achieve it. However, Xiao Yu has a jihua, and after he arrives at the Tianyuan Four star system, he will build a super-large particle collider around Tianyuan Four, and when he has a breakthrough in his basic physical theory, he will study super-distance communication jishu.

In fact, in recent decades, human science has not made great progress, and has been developing on the two cornerstones of relativity and quantum theory, at most only tinkering with some details. Human society seems to be thriving, but in fact, it is only the development of jishu, not the development of theory.

There is no doubt that over-distance communication cannot be realized under the current framework of basic physical theory.

Xiao Yu shook his head slightly, threw these thoughts out of his mind, and began to think about how to use the current jishu level to solve the problems he was currently encountering.

"Only by using programming jishu, on a distance scale of 1.3 billion kilometers, I can only do some general control of the Hope, and the specific details must be programmed in advance and let the Hope do it by itself. Well, after the departure of Hope, there is a problem with interstellar transportation here in the Saturn system, so let's build another spaceship. ”

"The radiation intensity of the 'No. 1' Wood Spirit is not enough to build another spaceship, so let's use the Hope to catch some Wood Spirit first. It's just that Jupiter is also 700 million kilometers away from here, and it takes 40 minutes for a signal to be delivered. ”

Xiao Yu sighed and continued to think.

"At Hope's speed, it will take a month to reach Jupiter, and with the time it takes to capture it, it will take about two and a half months to go back and forth. Well, then, get out of the main base and head to Jupiter. Then, I went to the original earth orbit to mine, and I relied on the program to do it myself, and I really couldn't afford to delay it for so long. ”

After thinking about it slowly, Xiao Yu formulated a jihua.

After the general framework came out, Xiao Yu began to tinker with the details, that is, how to use limited resources and time to do the most things.

"Since we are going to Jupiter, then we should pave the way for the trip to the earth, well, put a high-power communication satellite at the Lagrange point of the Sun-Saturn, and then put one at the Lagrange point of the Sun-Jupiter, and basically solve the communication problem."

After making up his mind, Xiao Yu immediately began the construction of these two satellites. With the previous experience of building nearly 100 satellites, the construction process of these two satellites went smoothly and was completed in only one month.

After everything was ready, Xiao Yu put the two satellites into the Hope, and made proper arrangements for the ninety-three bases on Titan, such as shutting down some machines, suspending mining, and writing some programs for some robots to be responsible for the daily maintenance of the base.

Although the main control computer on the Hope is also a photonic computer, its computing power is countless times worse than that in the main base. However, Xiao Yu didn't plan to use this computer to do anything with a large amount of calculations, so he should have rested.

Maneuvering Hope to leave Titan, Xiao Yu first reached the Sun-Saturn Lagrange point, stopped, placed a satellite here, and then kept accelerating, three minutes later, Hope's speed reached 350 kilometers per second, quickly leaving the Saturn system and speeding towards Jupiter.

The long journey lasted a month. Seeing Jupiter's familiar face again, Xiao Yu couldn't help but get excited in his heart.

"I said it a long time ago, I'll be back! With the latest materials that have been transformed from the corpse of the black worm, this time, I see what else you can do to me? Obediently become my building material! ”

Coming to an orbit of 100,000 kilometers away from Jupiter, Xiao Yu shouted arrogantly.