The erosion of time is the most cruel, whether it is to escape or to cherish, it will not change anything with the will of man. The hasty and hectic six months passed quickly, and even a few more days were delayed, but the people's space project must be over.

Professor Thomson, who is in charge of astronomical observations, has issued several warnings in a row, several large meteorites have begun to cross the Lagrange limit, there is a great probability of hitting the moon, and mankind must leave immediately!

These meteorites and the Moon attract each other, forming a complex multi-body motion. This kind of motion is extremely sensitive to the initial value, called chaotic phenomenon, and it is difficult for humans to get an accurate solution. But the danger is real, and the early you leave, the sooner you are safe.

In the heart of Yu Yifeng, the captain of the Noah, there is a strong and complicated parting emotion, human beings, who are about to leave their hometown, are likely to leave forever and never come back. This is also the thought in the minds of many people, and when they work, they often reveal a fleeting sense of melancholy.

However, this is also a helpless thing, and human beings must go to the universe and find their own sky.

From the perspective of the satellite, it can be seen that the entire base has changed dramatically. The original round glass cover has long since been removed, replaced by a huge deep pit, and a silver-white ball is lying quietly in the center of the pit.

It is the last home of mankind - the Noah!

It was too big, too spectacular, a sphere with a diameter of fifteen kilometers, seven and a half times larger than the original base, and occupied half of the entire crater. Regardless of other technologies, such a large volume alone cannot be made by humans.

The tallest building of mankind, the Burj Khalifa, is 828 meters high, only one-eighteenth of it, it can be said that it is only a small point, the shape of the ball and the cone, the scientific and technological content represented is also different, and the circular spaceship is the most difficult to build.

Its surface is almost completely smooth, which means that there is very little friction, so that no dust can get on the surface of the hull, and the whole ship looks sparkling and has a shocking aesthetic.

But because there is no friction and it is hard enough, it has brought certain difficulties to people's construction, and there is no way to paste any cement and paint directly. There is no friction, and it will fall off as soon as you wipe it on, even the most effective glue of human beings.

Clever scientists came up with another way, you can't build on the outside, but you can build on the inside, people built a lot of thick cement pillars inside the spaceship, and then extended the reinforced concrete from the entrance and exit of the spaceship.

Relying on these extended structures, people indirectly built a lot of things on the surface of the spaceship. Like the engine room, the cockpit, the observation room, and some laboratories and so on. These appendages are made of titanium-aluminium alloy, which is very lightweight, yet rigid and reliable.

Yu Yifeng was even a little glad that this spaceship had more than 2,000 entrances and exits. Without that, humans wouldn't even be able to build anything on the surface of the ship.

This is the difference between heaven and earth in technology.

The civilization that built this spaceship, humanity really can't imagine how developed it is. Human beings, in the face of this super civilization, may really be similar to a paramecium.

I have to say that this is a pessimistic thought, but it is also a fact that in the face of the vast universe, human beings are still too immature.

The "engine" at the bottom of the ship is a bit like a large basin. However, this "basin" is upside down, and there is a large amount of gas sealed inside, as well as a billion-ton helium-3 nuclear bomb!

The diameter of the basin is about a kilometer, and this volume has been carefully calculated, too big is not good, too small is not good. Don't think that the diameter of the spacecraft is fifteen kilometers, the engine is only so small, the mass of the spacecraft is really too light compared to its volume, and the overall density is not as good as a balloon.

So, such a small engine is enough.

Everything is being put to the final test, and hundreds of testers in spacesuits are busy.

Yu Yifeng inspected the warehouse again, billions of tons of ore were piled up in the spaceship like a small mountain, and the entire uranium resource mine was almost hollowed out, enough for human beings to use it for twenty or thirty years. The ice resources at the bottom of the spacecraft were also extracted, and about 100 million tons of ice were obtained. The remaining food is enough for humans to eat for two or three years.

But Yu Yifeng still felt that it was not enough, he always had a feeling of insecurity. Perhaps, this is the common feeling in everyone's hearts, in the vast space, human beings will not get any material supplements, no matter how much is not enough.

It's like when the wanderer leaves his mother for the first time, he always carries a large bag and a lot of things, and no matter how well he prepares, he is still nervous.

If all goes well, Mars will be in three or four months, and people will be able to replenish their resources at that time, so they don't have to be so nervous.

Yu Yifeng comforted himself and continued to inspect.

From the inside, the entire spaceship facilities can only be said to be unsatisfactory. Because of gravity, the entire residential area is divided into three parts: upper, middle and lower. The top gravity is the lowest, about the same as the moon, and the bottom is the Earth's gravity.

This is because people have not yet adapted to the relationship of the earth's gravity. If you are accustomed to living in a low-gravity environment like the moon, the calcium in your bones will gradually be lost, and your muscles will gradually atrophy.

Therefore, everyone needs to have a gradual adaptation process, and the first batch of people who moved in have fully adapted to the earth's gravity environment.

As for people's living conditions, it can't be said to be very good, after all, six months is too short a time for people to build any high-rise buildings. Necessary life-sustaining equipment, such as oxygen circulation system, water circulation system, power system, sewage treatment system, it takes a lot of time to build these things, and there is no time to improve the living environment!

In order to prevent such and such bad things, Yu Yifeng simply waved his hand, and everyone slept in the tin room, even himself.

This kind of simple and easy-to-make house, surrounded by a few pieces of iron, is the kind that workers often sleep in the construction site, which cannot be said to be comfortable and not very soundproof, but it can be sheltered.

No one has any dissatisfaction with this phenomenon, Captain Yu Yifeng himself lives in this kind of house, what else can he say? Are you better than the captain of the Ark Noah?

By the way, the ship's name is Noah because it comes from the Hebrew Bible? The story in Genesis is a ship that saves the world. And this time, it's also a spaceship to save humanity.

"Report to the captain! The engine system has been checked and no errors have been found, please instruct! ”

"Report to the captain! The powertrain was inspected and no errors were found! ”

"Captain, all the people have already arranged their accommodations."

……

One by one, the test reports came up, and no abnormalities were found. It's time to leave, Yu Yifeng tapped the table lightly with his fingers, and said with emotion: "You go and broadcast a notice, from now on, everyone is free to move, and the time to stay on the ground must not exceed twelve o'clock at midnight." ”

"Tomorrow at eight o'clock, we will officially set sail!"

"Yes!"

As soon as this notice was announced, a large group of people in Hula got off the ship. Wearing spacesuits, they hobbled on the moon, some took pictures of the spacecraft, some took pictures with each other, and some sketched, having a lot of fun.

People know that the time spent on the moon will be gone, so it is especially cherished, and this is the last memorial.