The long-term space life had a great impact on Ye Han's body. He stayed in the Yuegong Base Affiliated Hospital for half a month. His body only recovered slightly, but he was still far from being healthy again.
There are many people in similar situations in the expeditionary force. For better medical treatment and recovery, Ye Han and other well-recovered personnel were the first batch to return to the Beiyuezhou base, where they will undergo a period of isolation and recovery.
It has been more than half a century since Gagarin entered space. Humanity has already summarized a complete set of space recovery plans. However, the expeditionary force was in weightlessness for too long. Even if hibernation was injected, the body would still inevitably undergo a series of physiological changes.
Moreover, everyone's situation is different, and they must be individually documented and treated differently to obtain the best recovery effect using the most scientific means.
Long-term weightlessness is so harmful to the human body that the military has begun to consider using a rotating structure on new warships to generate a certain amount of gravity with centrifugal force to prevent the crew from being in a state of weightlessness for a long time.
This kind of spaceship often appears in science fiction movies, and it is not difficult to use it for civilian spaceships, but it is quite a challenge to use it on warships.
Both China and the United States hope to develop real artificial gravity as soon as possible. However, although humans have discovered gravitational waves, until there is a relativistic breakthrough in basic theory, artificial gravity is still a distant and unrealistic goal.
If there was any hope, no matter how illusory, countries would dare to spend money on research. However, the current situation is that they don’t know where to start, and they don’t even have a research direction. No matter how much money they spend, it is useless. They can only maintain
The status quo slowly accumulates.
This is really an embarrassing situation. Many people have expressed the same emotion: How great it would be if Einstein completed the grand unified theory!
Beiyuezhou also has a research laboratory that studies artificial gravity. Unfortunately, apart from playing with magnetic levitation, there is no other research direction at all.
Another half month later, Ye Han and others had adapted to the moon's gravity and no longer affected their daily lives. The group of people who had recovered the best received a notice from the base: Be prepared to return to Earth and set off on time at nine o'clock tomorrow.
!
This news is really surprising. Ye Han only thought of recovering on the moon for a while. He never expected that he would send everyone back to the earth to recuperate.
Think about it. In the past, the cost of rocket launches was high, and anyone returning to the earth once would mean a waste of resources. Now that the electromagnetic orbit is put into use, the cost of spaceflight has been greatly reduced, and the country can fully afford the cost of personnel exchanges.
And after some research, I found out that the military had just issued a set of regulations for outer space not long ago. Among them, in terms of personnel, it stipulates that those who have worked in low-gravity environments such as Beiyuezhou and Yuegong Base for one year, the space fleet
After working in a weightless environment for half a year, you can return to the ground to recuperate for one to two months. In special circumstances, the recuperation period can be appropriately extended, or until the person recovers health.
It had been two and a half years since Ye Han left. According to regulations, he could enjoy up to four months of recuperation leave. The only people who enjoyed the same treatment were those who escaped from the moon on the same boat as him.
Ye Han hoped that Bai Xiaoting could accompany him back to Earth, but if Bai Xiaoting left, she would leave Professor Qin alone on the moon. Although Bai Xiaoting was reluctant to separate from her long-lost husband, she ultimately chose to stay on the moon.
In her own words, it is not too late to return to Earth when she has children.
Having to return to Earth to give birth is also one aspect of space security. Animal experiments have found that animals cannot get pregnant normally in a zero-gravity environment. Although they can in a low-gravity environment, low gravity can also trigger a series of physiological changes. Growth in a low-gravity environment
Fetuses that have grown up have various problems such as being weak and sick, growing too fast and so on.
Due to physical problems, once such children grow up and return to the earth, their bodies will not be able to adapt to the standard gravity environment, and may even be life-threatening. In a sense, children born on the moon will become the first generation of real children.
Moon Man, Moon Man who cannot return to Earth.
The emergence of two populations of Earth and Moon people in the same country and the same nation will not be of any benefit to the country, and may even sow the roots of division, leading to the complete separation of the moon and the earth one day in the future.
Based on humanity and tradition, and in order to prevent the emergence of people on the moon, it is absolutely necessary for the country to take preventive measures before they happen.
After a long military career, Ye Han still does not have a fixed home and does not have much private property. After receiving the notice, he simply packed up and boarded the ship leaving Beiyuezhou with more than a hundred companions the next day.
spaceship.
After the spacecraft takes off, it docks with the Lunar Palace Base, and then takes a passenger flight provided by the military to fly to the earth. In view of the distance between the earth and the moon, even a nuclear-powered spacecraft will take two to three days to fly to the moon, so sailing on
The passenger spaceship between the Moon Palace and the Heavenly Palace was designed based on ocean liner from the beginning, instead of just sending a transport spacecraft to deal with the problem.
Two days later, the spacecraft flew near Tiangong.
Tiangong is no longer the ordinary space station it was back then, but it still stays at an altitude of more than 400 kilometers.
Tiangong is larger than Yuegong, and its rotation speed is slightly faster, and the gravity generated is equivalent to one-fourth of the standard gravity. The parking area of the spacecraft is located in the center of Tiangong, where the rotation speed is slow and the centrifugal force is relatively low.
Easy to take off and land.
Landing on Tiangong is very interesting. The spacecraft must align its bow with the rotation axis of the base, and then use the engine to drive the spacecraft. The stationery spacecraft also rotates until the rotation speed of the spacecraft is consistent with the speed of the base axis.
At this time, when looking at the base in the spacecraft, the base no longer keeps spinning, but remains relatively stationary. After this step is achieved, the spacecraft can approach the base, fly into the airport and be grasped by mechanical equipment, and then tow the spacecraft to berth.
The position is fixed and the landing procedure of the spacecraft is completed.
On the contrary, when the spacecraft leaves the port, it must also start from the axis position, otherwise it may collide with the Tiangong base due to operational errors.
The Tiangong base sounds high-end, but the technology and materials used to build the Tiangong are not out of date with this era. If it was hit hard by a spacecraft with a displacement of hundreds or thousands of tons, it would not only die but also become crippled.
Since the altitude of Tiangong is not in geosynchronous orbit, "passengers" arriving at Tiangong must wait patiently for Tiangong to return to the sky above the motherland before boarding the return spacecraft to embark on the journey back to the ground.
When Ye Han and others arrived at the Tiangong base, it still took forty minutes for the base to return to the South China Sea. However, everyone could not stay in the base for a while. They immediately entered the ground-to-air spaceship under the organization of the staff and fastened their seat belts.
