Xiao Yu was not worried that the alien technology he encountered would surpass him too much.

Although the theoretical corollary is that aliens, especially intelligent aliens, should exist in large numbers, the Fermi paradox shows that intelligent alien civilizations are far less numerous than expected. Those who exceed their own technological level should be less. Xiao Yu didn't think he would be unlucky to that extent.

Xiao Yu is not worried, there is another reason. The hydrogen bomb is the weapon of the highest achievement under the two cornerstones of relativity and quantum theory. In other words, as long as the alien civilization it encounters has not broken through the shackles of these two theories, then it is impossible for it to have weapons more powerful than hydrogen bombs. In this case, Xiao Yu weishenme is going to be afraid?

The development of civilizations is similar, for example, in the ancient earth, several civilizations that did not communicate with each other all coincidentally chose gold as the equivalent. This is the embodiment of the similarity of civilizations. Xiao Yu is convinced that the development of science and technology should go from easy to difficult, and it is impossible for a civilization in the universe to study science from difficult to easy. If there are extraterrestrial intelligent civilizations, then it is very likely that they will also go through the stages of cold weapons, hot weapons, and nuclear power. As long as they have not broken through nuclear power and entered the next stage, Xiao Yu has nothing to fear.

You must know that Xiao Yu's liliang is basically a special case, Xiao Yu's fleet has no social structure, which means that there are no internal contradictions, and there is no liliang loss caused by internal disputes and conflicts. In other words, Xiao Yu's Liliang is united and can be played 100%, and, thanks to Xiao Yu's powerful computing power, Xiao Yu's Liliang can even play at a super level. As long as there is no gap between the other party's technological level and his own, then under the same technology, Xiao Yu can definitely sweep everything.

This is where the wisdom of the human brain and the computing power of a computer come in.

After the successful test flight, Aurora replaced Hope and took on the task of collecting fusion fuel in Saturn, after all, the difference in size determined that Aurora was more efficient. Hope returned to Titan and took on various routine maintenance tasks for the satellite.

Everything is developing in an orderly manner.

Half a year later, the first proto-Earth meteorite came into orbit around Saturn. Hope has long been a million kilometers beyond Saturn's orbit, ready to meet it.

In the quiet of space, with the huge Saturn as the background, facing the direction of the sun, a small black dot, dragging a long tail flame behind it, quickly struck Saturn.

After this meteorite crossed Hope, Xiao Yu also began to manipulate Hope, accelerating in the direction of Saturn, gradually, gradually, with the increase in the speed of Hope, Hope and the meteorite remained in a relatively stationary position, and the two flew towards Saturn at a speed of more than 30 kilometers per second.

Xiao Yu slowly approached the meteorite, first fixed it, and then, maneuvering the robot to install six small nuclear fusion engines at its optimal location, and on the other side, a huge parachute.

Ready for everything, Xiao Yu manipulated the Hope to move away from it. After calculating the optimal orbit, the fusion engine kicks in, propelling the meteorite out of its original offset orbit and towards the correct orbit. When it was still 100,000 kilometers away from Titan's atmosphere, with the original engine, a total of seven engines worked together, pushing it in opposite directions and starting to slow down.

Its speed relative to Titan began to decrease slowly, from 25 kilometers per second, to 15 kilometers per second, and then to 5 kilometers per second, and it continued to decline slowly, and by the time it came into contact with Titan's atmosphere, its speed had dropped to less than one kilometer per second.

Slowing down this procedure is a must, if you don't slow down, the meteorite will hit Titan at a very high speed, this first small meteorite is okay, if it is the largest, the meteorite with a mass of 300,000 tons, if it hits Titan head-on, it is estimated that it can affect Titan's crust, and it is not uncommon for a major earthquake to destroy Xiao Yu's base.

At a distance of only ten kilometers from the atmosphere, the meteorite, under the recoil of seven fusion-powered engines, has reduced its speed to 300 meters per second. Then, it crashed headfirst into the atmosphere.

Titan's thick atmosphere rubs against it, turning its surface red. However, with such a huge amount of friction, its speed is further reduced.

The parachute also opened. This is a high-strength large parachute specially made by Xiao Yu for these meteorites, and the entire umbrella surface is open, which is estimated to be several hundred square meters in size. This parachute, together with the fusion engine and air friction, will provide enough cushioning force for the meteorite to ensure that it lands smoothly.

Its height is constantly decreasing. Ten Fengshen helicopters are closely monitoring the area around the expected landing area.

Under the combined action of three different forces, the final landing speed of this meteorite is 16 meters per second. This speed equivalent to that of a snail smashed the ground of Titan into a crater twenty meters deep and sixty meters in radius. The seismic wave caused by it was observed even by Xiao Yu, who was a thousand kilometers away from the impact site.

Thankfully, everything is within acceptable limits. Ten Fengshen helicopters flew over together, lowered the thick steel cable, and a robot fixed the steel cable on the meteorite, and ten Fengshen helicopters worked together to pull it up and fly towards the titanium zirconium processing base.

The whole process can be described as thrilling.

Three days later, the second meteorite arrived. This is a large meteorite with a mass of 200,000 tons, Xiao Yu manipulated the Hope and installed more than 50 small nuclear fusion engines on it to let it fall to the ground safely, but it also left a large crater with a diameter of several hundred meters on the ground.

In this way, every few days, a meteorite fell from the sky, and these meteorites brought enough titanium and zirconium to Xiao Yu.

The current Xiao Yu can be said to have sufficient raw materials. There are enough black insect corpses, sufficient number of wood spirits, sufficient scientific and technological reserves, and sufficient construction resources. With the support of huge resources, Xiao Yu has a new Jihua.

"It's time to start building the fleet." Xiao Yu pondered silently.

In Xiao Yu's plan, the starfleet of Yuanyuan IV includes at least three "county"-class spaceships, at least thirty "township"-class spaceships, and thousands of "village"-class spaceships. After all, the journey from the solar system to the Tianyuan four star system is about ten and a half light years. With Xiao Yu's estimated maximum speed, 500 kilometers per second, it would take more than 6,000 years.

More than 6,000 years is a long time, which is basically equal to the development time of the entire human society, and even a little longer. In such a long period of time, the wear and tear of the spacecraft itself, the damage of parts, etc., need to be taken into account, and the number of fleets is simply not enough.

Even, in Xiao Yu's plan, at least half of the more than 1,000 spaceships are material spaceships. That is, to do nothing else, and after maintaining its own navigation ability, it is specially used to reserve supplies. Even so, in Xiao Yu's estimate, after arriving at the destination, half of the entire fleet can be left, which can be regarded as an eye-opener.

So the choice of the purpose of the voyage is very important. Because there is only one chance to choose, the wrong choice, when you arrive at the destination, you find that it is empty, there is nothing, then the fun is great.

When it really came to that situation, Xiao Yu had no other way than to wait for death.

In the four star systems of Tianyuan, it can be determined that there is at least one Jupiti-like planet, where Xiao Yu can be replenished with sufficient nuclear fusion fuel, and it is speculated that there is a terrestrial planet, where Xiao Yu can be supplemented with building materials to build new spaceships. It didn't matter if the speculated terrestrial planets didn't exist, because Xiao Yu knew that the four star systems of Tianyuan still had a huge number of asteroid rings, and they could also be replenished with raw materials there.

The long distances and the long time it takes to cover them are the biggest obstacles to interstellar travel. Now Xiao Yu, with nuclear fusion power, is still like this, if Xiao Yu is still powered by chemical fuel, if he wants to carry out interstellar voyages, he doesn't even think about it, it is a bit of a daydream, it is almost like crazy, and his brain is broken.

The universe is just too big. The relationship between Tianyuan Si and the sun is equivalent to the neighborly relationship between the front yard and the back yard, but with the human liliang, it takes such a long time to get from this point to that point.

Therefore, in the previous concept of interstellar navigation of human beings, an incomparably huge spaceship was used as the carrier, and there must be at least thousands of people on the spaceship, because in this way, sufficient reproduction capacity can be guaranteed, and it is necessary to rely on generations of human beings to alternately relay to complete the dream of interstellar navigation.

Of course, Xiao Yu has no concerns in this regard. As long as there is sufficient fuel to ensure the boot of the central computer, time is a simple number for Xiao Yu, and one thousand years and ten thousand years are just different in size.

Up to now, Xiao Yu has been away from Earth for almost ten years. A lot has happened in the last 10 years. From Jupiter's escape, to the landing of Titan, to the completion of the first base, all kinds of things, bit by bit, all flowed through Xiao Yu's heart.

"People, always have to look forward, although the hometown is good, although safe, comfortable, but not to go outside, how can there be great achievements. Fleet building jihua, let's start. ”

Xiao Yu sighed and started his jihua.