Titan has a dense atmosphere, the total mass of which is even higher than the total mass of the Earth's atmosphere, and its main component is nitrogen, which is 95 percent. Such concentrations in the atmosphere represent intense atmospheric friction. Xiao Yu slowly adjusted his posture and cut into the atmosphere at a suitable angle.

Under the high-speed friction, the ship's hull quickly turned red. But all this was expected, and Xiao Yu was not worried at all.

The altitude is constantly decreasing, from 3,000 kilometers to 1,000 kilometers to 100 kilometers, entering the troposphere of Titan's atmosphere.

The speed began to decrease dramatically, plummeting from two kilometers per second, 1.5 kilometers per second, one kilometer per second, and 600 meters per second......

It wasn't until he was three thousand meters above the ground that Xiao Yu opened his parachute. The thick atmosphere stretched the parachute to the full, and the speed suddenly dropped to 300 meters per second.

Such a speed is only equivalent to a snail crawling in the universe. But for the landing, it was still a little too fast. Xiao Yu's hull was too fragile to withstand any violent impact. Xiao Yu's ideal landing plan is to land slowly. So after the speed dropped to 100 meters per second, Xiao Yu turned on the recoil rocket again.

With a series of means, the spacecraft began to land at a speed of several meters per second, and it was slowing down. Finally, when he was only two meters above the ground, Xiao Yu's speed dropped to several kilometers per second.

This speed is already within the range of bearing. The high-temperature exhaust gas ejected by the reflex rocket melted Titan's surface, and a large amount of material began to volatilize, and then condensed in the air, turning into patches of white mist. In a white mist, Xiao Yu was like an immortal who had been mortal for nine days, landing on the ground.

When the white mist cleared, Xiao Yu opened the hatch. Six robots with probes came out. They were side by side, like a group of soldiers.

What caught Xiao Yu's eye was a magical shijie.

It's night on Titan, and the sky is dark. Under this thick atmosphere, there are almost no stars in the sky, and only a few bright stars can be observed.

Luckily, though, it has a huge 'moon'. This huge figure is very conspicuous.

That's Saturn, the slightly yellowish Saturn.

When viewed from Titan, Saturn looks like the Sun from Earth.

Saturn is 1.2 million kilometers away from Titan. That's enough distance to cover Titan within Saturn's own magnetic field, which helps to withstand the solar wind from the Sun. Titan's orbit around Saturn is about 16 days.

The earth was shrouded in darkness, which could basically be described as a finger that could not be seen. At least, standing in front of Xiao Yu's spaceship, the six robots lined up in a row, with optical detectors, would not be able to take any pictures.

Xiao Yu turned on the night vision device. As a result, a shocking scene was displayed in front of Xiao Yu.

There was a lake in front of him, just a few hundred meters in front of Xiao Yu. It was a huge lake, and the wind blowing on Titan made ripples on the surface of the lake, and there were some waves crashing against the shore, making a rattling sound.

"This lake is beautiful." Xiao Yu sighed, "Let's call you the Blue Lake." ”

Nearby, there was a small river that meandered, and some liquid from somewhere slowly flowed into the lake.

Beneath your feet, there is a slightly mottled ground, like sand, and some stones, similar to the Gobi Desert above the earth. In the rear, there was a small hill that was not very high, short and low, lying there, like an ancient beast.

This is a place 1.5 billion kilometers away from the Earth, where the Earth is no longer visible to the naked eye alone. There has never been a human footprint here, or even a living one. It is completely shaped by great nature, without any artificial force. As a wise and self-aware individual, Xiao Yu was the first to come and see this place.

Above, is the giant Saturn. Ahead, there is a lake that looks like the sea. Behind it, there is a low hill and a small river next to it. Xiao Yu suddenly felt the urge to cry.

Then, a sensor on one of the robots detected a liquid falling from the sky, followed by five other robots. Xiao Yu immediately realized a problem.

It's raining.

Yes, there is also rain on Titan. However, the rain on Titan is not made of water, but liquid methane. There are lakes, and small rivers, all of which are made of liquid methane.

The rain gradually became heavier, and Xiao Yu couldn't cry or laugh, so he had to command the six robots to return to the cabin, postponing the exploration of Jihua until after the rain stopped.

After turning on the collection equipment and various sensors on the ship's hull, Xiao Yu began to feel the rain from the alien planet in a daze. This feeling is amazing, as if Xiao Yu has returned to the previous era of carefree living on the earth.

"I don't have a home anymore." Xiao Yu thought gloomily, "There is no such thing as the same." ”

"I don't have a body, so I'm not really human."

The rain was pouring down, and Xiao Yu's thoughts drifted far away. For the first time, Xiao Yu began to let go of his fanatical desire to explore and began to have the energy to think about the rest.

For the first time, Xiao Yu really wanted to talk to someone. However, here, apart from Xiao Yu, the only thing that can barely be regarded as a creature is the 'No. 1' captured from Jupiter in the metal box.

Xiao Yu mischievously let out a burst of high-frequency pulses, looking at the restless No. 1 in the box, rushing left and right, and suddenly his mood improved a little.

The heavy rain lasted for several days. The surging lake water almost didn't even reach Xiao Yu. However, Xiao Yu was not worried at all, he was still quite confident in the tightness of his spaceship. Moreover, sooner or later, the lake will recede, and at this time, Xiao Yu can also easily collect some methane as a reserve.

Xiao Yu dismantled one of the engines on the spacecraft and made a slight modification, transforming it from burning liquid hydrogen to burning methane. I tested it and everything was in good condition.

After the rain, the sky clears, and the day of Titan has arrived.

The sky of Titan is a dark blue that is intoxicating. When Titan orbits on the Sun-facing side of Saturn, the sunlight hits Titan, and after most of the sunlight is reflected away, a small amount of sunlight penetrates to the ground, and the sky becomes blue after the diffuse reflection of Titan's thick atmosphere. The principle is similar to that of the sky on Earth, which is blue.

However, Titan's daytime is still very dark, like the night when the Earth is clear and the moon is not clear, but at least you can see a little bit with the help of optical detectors. Due to the inertial thinking of human beings, Xiao Yu has never been very suitable for the pictures taken by night vision devices, and the scenery in the visible light band is more beautiful.

The sun shines in, the temperature rises a little, and then the liquid methane begins to sublimate into a gaseous state, like the evaporation of water above the earth, and the rising water level slowly recedes. Xiao Yu knows that this is the gas-liquid circulation system of methane that is unique to Titan.

The damp, muddy ground began to dry out. Xiao Yu re-dispatched a formation of six robots and began to conduct field surveys of the surrounding terrain.

For convenience, the robots made by Xiao Yu are all battery-powered. A single charge can support them in the field for about six to eight hours. Of course, in order to adapt to field exploration activities, Xiao Yu also made some modifications to them. The remaining two robots remain in the ship's cabin in case an accident would result in the loss of all robots.

Under the unified command of Xiao Yu, these six robots followed the circle and took the spaceship as the center of the circle to explore the terrain.

Titan's terrain is flat with no major undulations, and according to three-dimensional images taken in orbit around Titan, none of the highest peaks on Titan is more than 300 meters.

The reason for this phenomenon is still not clear to Xiao Yu, but according to speculation, it is probably related to some special geological activities, and it may also be due to the influence of Saturn.

The exploration of the terrain was slowly unfolding, and it had already detected a place of a thousand meters away from Xiao Yu. It has been detected that there is an iron ore in this area before, and Xiao Yu is now going to find out the best mining point for this iron ore.

Ahead, a large dark red patch attracted Xiao Yu's attention. Xiao Yu commanded a robot to approach, then crouched down, turned on the flash, and the image data about these things was transmitted back.

Xiao Yu immediately started his analysis.

Dark red iron ore. A thought came to Xiao Yu's mind. Xiao Yu's mood suddenly became anxious.

"My luck, it's going to be so good?"

Xiao Yu looked at the test data in disbelief.

This is hematite, and the main component is iron oxide, which can be separated into iron and oxygen by the jishu method. Iron can be used to make steel, and oxygen can be used as an oxidant.

Xiao Yu still has a lot of incendiary agents, and even methane, which has almost unlimited reserves on Titan, can be used as an incendiary agent, and the only thing that worries Xiao Yu is the oxidant.

The hematite discovered almost made up for Xiao Yu's shortage of materials in two ways. This discovery made Xiao Yu sigh.

Moreover, Xiao Yu also found that most of this hematite is an open-pit vein, and there are many associated miscellaneous ores, and the types are also very rich.

Such as copper, tin, gold, silver, silicon, chromium, nickel, etc.

"This, this is simply a gift from God. Could it be that God finally thinks that I have been struggling a little lately, so he sent me this great gift? Yes, it must be so. ”

Xiao Yu was overjoyed, and immediately commanded six robots to move closer to him, and then jointly transported the mining equipment one by one.

Mining, mining, building bases, building spaceships......

The era of great construction is about to begin.