Due to his lack of astronomical knowledge, Zhen Fei walked in the wrong direction in the starry sky. If it weren't for the fact that Gorgen still knew the constellations of the Milky Way, it would have made a big joke.

Based on the position of Cygnus and Aquila from the Earth, the mathematically proficient Qiao Bushi drew an accurate line, and then calculated the time, Qiao Bushi said: "If it goes well, we should enter the Earth in a year." ”

"Can you be sure?" Zhen Fei asked in surprise. I didn't expect Qiao Bushi to be so amazing.

"Almost, I measured the size of the Cygnus constellation provided by Gorgen and the angle of its position with other constellations, it should be about 500 million kilometers, and our warship will be close to the Earth in a year's flight." The distance of 500 million kilometers is about a day to fly at the speed of light in the starry sky, but their warships need to fly for about a year, and in the face of the infinite starry sky, the speed and ability of human beings are simply weak.

"Great, when you get home, I'll take you to see the scenery of the Bund." Zhen Fei, who was excited, hugged Qiao Bushi's shoulder.

Qiao Bushi did not struggle and refused. Let him hug himself tightly, close his eyes and smile slightly, it is really happy to be hugged by him.

On this day, an observer on duty in auspicious spotted an iron tower erected on a planet, and after careful observation, it was confirmed that it was a radio signal converter, because they had also erected this kind of thing before, and they were very familiar with the appearance of the tower.

Zhen Fei, who received the news, immediately ordered the escort warship to go and take a closer look. When he was in the secluded world, Zhen Fei once sent Tao Li and Ming Fan to take people to explore the road of the starry sky first, but the trace of these people was lost in the misty starry sky.

Later, Zhen Fei also sponsored the descendants of the ancient dynasty to enter the starry sky again, but there was no news, and it would be a surprise if they could be found and found.

The tower that Jixiang saw was far away, and the battleship had to fly for more than a day, and it took a lot of time to check it. And there is air on the planet, after entering the atmosphere, the battleship faces many dangers, the last encounter on the Golden Planet is an example, until now, each battleship has a spacesuit made of hydrogen, and a large amount of spare hydrogen, which is usually placed in the coldest position, so that hydrogen becomes a solidified state, because the battleship accepts the different positions of the distant stars, the place where the hydrogen is placed needs to avoid the stars, and it is also very troublesome to change several positions every day.

Later, Zhen Fei came up with a way to find an asteroid full of ice and snow, and spent five days risking to obtain the essence of 10,000-year-old ice from the thick ice, which has been at ultra-low temperature since ancient times, very cold, and the temperature is about 1,000 degrees below zero. The samurai didn't dare to use their arms to grab it at all, so they could only wrap the Xuanbing essence with a rope made of snow cotton, and then put it in a mid-level magic weapon, and enclose the hydrogen equipment using the Xuanbing essence, and when using the hydrogen, they would be sacrificed from the magic weapon.

This method proved to work, and the essence of Xuan Ice created a natural giant cold storage with a temperature of about minus 600 degrees. This temperature is something that cannot be done manually.

The samurai carefully approached the planet where the tower was discovered, this planet is not very large, about 30,000 kilometers in diameter, although it is more than twice the size of the earth, but it is a relatively common planet in the starry sky, and there is nothing special about it.

There were three warships on the expedition, and in addition to the pilot and two observers, they closely observed the road in front of the battleship from the auspicious lens, after all, it was out of the channel, which meant that every meter of distance in front of it could encounter danger.

After the battleship entered the atmosphere, everyone became nervous, and one observer exclaimed in surprise: "Look, it's in the direction of ten o'clock, what is that?" ”

Zhen Fei and the others also observed auspiciously from a distance, and saw that there was an extra layer of gray on top of this asteroid, like a mist, and this haze also had a pattern, which was very beautiful, like a blooming flower.

Zhen Fei looked back at the Nine Heavens Xuanjin Compass, only to see that there was suddenly a lot more "fierce" words in the direction of the asteroid. His heart immediately jumped wildly a few times, and he shouted, "Get out of there at once, and don't enter the planet yet." ”

After receiving the order, the three battleships immediately turned around and increased their speed to leave the atmosphere they had just entered.

The beautiful flower was getting closer and closer, and the samurai on the three warships heard a roar, like the sound of the terrible waves in the sea, and like the sound of countless demons coming out of hell.

All the people were stunned.

What is it?

The three battleships flew desperately, and the observer, who was looking at the flower at close range, suddenly said: "It was a hurricane, a very rare atmospheric storm, my God, I have never seen a storm like this, it was like destroying everything." ”

Because the gas is unstable, it is easy to form a large transfer of destructive air currents in the planet's atmosphere due to the action of eddy currents, air pressure, and gravity, which is the cause of hurricanes. As for how to prevent hurricanes, Zhen Fei and others have not yet found a pattern.

Relatively speaking, this hurricane, although fierce, cannot cover the entire planet. After the three escaped battleships broke out of the atmosphere, their speed increased suddenly. Then continue to the planets from another angle.

Hurricanes are like a storm in the sea, and they are quite scary in the center of the storm, but ten meters below the surface is a calm harbor. After the three warships entered the planet's atmosphere, they slowed down the descent, Zhen Fei and others commanded the battleships to avoid the hurricane, and a day later, the three warships slowly came to the surface layer of the planet, the reason why the speed is so slow is because the three warships rotate around the planet when they descend, and the process itself is also observing the planet's environment from different angles. If it goes straight down, it's much faster, but it may bring disaster.

It was also a coincidence that the tower was erected on the highest part of a mountain, and because it was slightly higher than the rest of the planet, it would not have been discovered by observers in time, and if the tower had been moved to the other side, the observers would not have found it.

The news that came back from the samurai was: "There are two words Tao Li on the iron tower, as well as the names of Zhang Manfeng and Dong Dali, and it was our people who erected this iron tower." ”

"Collect some samples of land from different areas and come back." Zhen Fei ordered.

"Yes." The samurai who entered the planet promised to come down.

Zhen Fei immediately said: "From today onwards, I will keep contacting Tao Li and the others with electric wave signals until they are connected, this may be just a post station on their way." ”

The samurai who entered the planet could not see the hurricane, but Zhen Fei and the others higher up tracked the hurricane in the starry sky, and an hour later, the hurricane changed, adding green and yellow to it.

No one knows how these two colors are formed, and hurricanes are so terrible that no one dares to approach them. The most reliable guess is: "These two colors may be some kind of gas released by the planet, which is generally highly toxic." ”

As the green and yellow areas gradually increase, the hurricane slowly descends, and finally sinks deep into the planet's atmosphere, where it is obscured by low-altitude clouds.

Two days later, the three warships of the expedition flew back, and they handed over the collected samples to Zhen Fei. After examination, Zhen Fei found that the planet was not dirt, or only a small amount of dirt, and most of the samples were solid hydrogen and oxygen.

Why is this so?

It can be inferred: "There is no water on this planet, and that's because the stars are still too far away from here, and hydrogen and oxygen existed when the universe was formed, and because there was no heat, hydrogen and oxygen existed in solid form." If there is a star, hydrogen and oxygen will become gas and exist in the air, and then hydrogen and oxygen react and combine to form water, which is the change of nature, with temperature, and then with water, the concentration of air is constantly adjusted, and in the evolution of tens of millions of years, the existence of life is born. ”

This is the state of the earth billions of years ago, just as a person grows from an embryo to a baby, and then enters childhood, adolescence, youth, and then enters the stage of middle age and old age.

The starry sky is changing, the earth is changing, and everyone is changing. It's time that makes this change. Time is eternal.

Hydrogen and oxygen are both good things, if these two gases are separated from water, it takes a processing process, and the quantity is very small, if you can get solid hydrogen and oxygen from this planet, they will be useful in the future, which is also a kind of scarce material.

The question now is, "What do you use to get hydrogen and oxygen?" ”

Hydrogen is good, but too much of it is also an extremely terrible weapon. The concentration of hydrogen is so great that only a small amount of spark will burn up, and at a considerable concentration it will explode. If you don't do it well, get a powder keg and come back, and then you will shoot yourself in the foot.

Therefore, Zhen Fei ordered to stay for a while and study the problem of how to obtain hydrogen and oxygen.

This process needs to be tried.

First of all, send someone to fill the storage tank of a mid-level magic weapon with hydrogen, and then put it inside the battleship, because the temperature inside the battleship is suitable for the normal temperature of the human body, to see how the solid hydrogen reacts.

The large amount of hydrogen is completely different from the little hydrogen they need to make their spacesuits.

A day later, when he entered the battleship where he was conducting the experiment, he found that the hydrogen in the mid-level magic weapon had leaked out. That mid-level artifact had been shattered. The magic weapon is a relatively magical thing, its hardness and flexibility far exceed that of metal materials, and now it is actually broken.

The problem became serious, and through the camera placed on the experimental battleship, it was observed that it was due to thermal expansion and cold contraction, and the magic weapon was opened.

Thermal expansion and contraction is a force of nature that is ubiquitous in nature. For example, when the temperature is too cold, water is filled with an iron pipe, and when it encounters a cold temperature, the water condenses into ice, and in the process of shrinking, the soft water will pull the iron water pipe apart, that is, the complete effect of the iron pipe will be destroyed.

The current situation is like this, at extremely low temperatures, hydrogen becomes solid, and at room temperature, hydrogen absorbs heat and becomes a gaseous state, rapidly expanding, and bursting the magic weapon.