The transport spacecraft circled the moon a total of four times before slowly adjusting its orbital position and officially docking with the space port.

This technology is not too difficult, and it is similar to the docking of the space station, which is divided into four stages: long-range guidance, short-range guidance, final approaching and docking.

After so many years of development, the technology has also become quite mature.

"Astronauts, please note that the spacecraft is about to arrive, please put on your spacesuit, enter the vacuum chamber, and line up to get off the spacecraft in turn."

Zhang Yuan exhaled and put on a heavy nano-silver ion anti-radiation suit, which looked like a thick cotton jacket. Wearing a thick glass cover on his head, after the inspection, he followed the "swim" into the vacuum chamber and then into a rail train.

"I'm floating up, help!" A male voice rang out from the headphones behind him.

Since there was no air, I couldn't even do the action of "swimming", so I could only hold on to the handrail and move forward.

If there is nowhere to draw on and no one to help, you may be permanently floating in mid-air.

There had been such a terrible accident, and this unfortunate person was floating in space like this, powerless to borrow. The nearest handrail was only a meter away from him, but in any case, there was no way to move the slightest. By the time the rescue team arrived, the guy had completely collapsed.

So today's spacesuits all have a very small jet device that is able to jet air currents to circumvent this phenomenon. Of course, whether this function can be used or not, any bit of matter in the universe is precious.

Zhang Yuan pulled the handrail and slowly pulled him down.

This guy even said "thank you".

This is the largest spaceport of mankind "Longmen 7", and all the astronauts will follow the central axis of "Earth Age" and enter the huge annular centrifugal force area.

It's not just air that can transmit sound, but any substance can transmit sound, and the roar of the rail train, through the handrails in the hand, is transmitted to the ears, and there is a very hard rumbling feeling.

The Earth Age is the most proud work of the "Wolf Design Bureau".

Zhang Yuan's father was also one of the main designers of the Wild Wolf Design Bureau.

In essence, it can be seen as a super-sized "balloon".

In addition to the use of high-strength metals in important structures such as the central shaft and engine room of the spacecraft, most of the other parts, including the walls and sails of the ship, are very lightweight nano-flexible materials.

The universe is almost in a vacuum, with a pressure of almost zero, but the spacecraft is filled with air, which is 1.01×10^5 Pa according to standard atmospheric pressure.

The pressure difference between the inside and outside is equivalent to ten tons of material per square meter under the Earth's gravity, which causes the entire ship to spontaneously expand externally to maintain its design shape.

The advantage of this is that the spacecraft is very, very lightweight, and it makes full use of the super tensile ability of the nanomaterials themselves.

Don't look at the size of the spacecraft, like a mountain, but its weight is less than 800,000 tons.

There are two girls whispering in the headphones, but they have inadvertently opened a small public channel.

"It is said that the nanomaterials of the walls of the spacecraft are only 4 millimeters thick...... It looks so unsafe, but what if it suddenly breaks? ”

"How could it be broken? It was a nanomaterial, and it was expected that 1 millimeter would be enough, but it was quadrupled for safety. ”

Listening to their conversation, they should not have interned in the space city, and they are a group of newcomers.

Li Zhendong turned his head and explained with a smile: "The spaceship wall is a hybrid structure of nanomaterials and aerogel. Just like reinforced concrete, nanomaterials are only 4 mm thick, but there is also aerogel that is lighter than air as a load-bearing structure, so it adds up to more than that. ”

"The ship's structure isn't what you think it is. The gravity-free zone has no atmosphere and stores various material resources. Only the ring-shaped living area has an atmosphere, which is a honeycomb structure, which is divided into many small rooms, and the outermost part is inhabited. ”

"There are barometric pressure sensors in every room. If there is an accident in the outer area, it is difficult to immediately affect the inside. Don't worry, we'll fix it right away! ”

"Are you a ship maintenance worker?" The girl's eyes widened and she turned her head.

She introduced herself very enthusiastically: "Hello, my name is Li Yiyi, I am a kindergarten teacher, and I am still a ...... Haha, painter. ”

"My name is Li Zhendong, everyone's surname is Li, and I have the same ancestor as you!"

"yes, haha!"

"We are all descendants of Lao Tzu."

"Lao Tzu?"

"Li Er!"

"Oh!"

Seeing that Li Zhendong was flirting with his sister again, and talking about quite boring topics, Zhang Yuan instinctively felt a little embarrassed for him. Can you talk about something a little more normal and make it seem to be culturally significant?

As for what spaceship maintenance personnel, it's just too much...... Ye Kaifu's skilled technician is the real spaceship maintenance personnel.

Although they have a little bit of technology, they still can't meet real problems.

"Are you...... Zhang Yuan! You're an astronaut too! ”

Zhang Yuan's head bag, hey, am I already so famous? What's the situation......

A group of girls chattered around Zhang Yuan again.

Li Zhendong spread his hands, and was robbed of the limelight, quite helpless.

The reason why there is such a strange job as a "kindergarten teacher" is that 500,000 young people will inevitably have the possibility of misfire. Inside the spaceship, everyone is encouraged to do contraception when they are passionate, but they will not force an abortion, and if they are pregnant, they can only give birth.

In short, with the blessing of various high technologies, the first basic goal of a small society is to be self-sufficient and maintain the entire social form; The second goal is development.

In the middle of such conversation, the rail train turned a corner and slowly stopped.

Everyone swam into a large elevator again.

The elevator will lead from the ship's central axis to the bottom floor of the centrifugal wheel, while giving all passengers a certain lateral linear velocity.

Earth Age uses centrifugal force to simulate gravity equivalently, with a radius of 2 kilometers and a gravity similar to that of the Earth at the bottom, with an angular velocity of about 0.071 rad/s, equivalent to a rotation in 89 seconds.

This angular velocity is not high, which means that the Coriolis force is very small, and humans are very comfortable to live in.

"Drop", the elevator door finally opened, and everyone entered a small room and took off their spacesuits.

The air temperature is 24 degrees Celsius and the air humidity is 50%.

Zhang Yuan stepped on the floor excitedly, the texture under his feet was a bit similar to that of a carpet, but it did not lose its hardness.

Moreover, it has a gravity similar to that of the Earth, which is convenient to move.

It's just that I have been in a state of weightlessness these days, and my body bones are a little scattered, and I have a little difficulty walking for a while.