How many people immigrated into space?

Liu Yang is not the first female astronaut to go into space without getting married and having children. On the contrary, most female astronauts went into space and had the experience of getting married and having children.

According to incomplete statistics, there are more than 500 astronauts in the world at present, among which about 58 female astronauts have been to space, and Liu Yang is the 57th female astronaut in the world.

With the rapid development of modern space technology, a manned space launch often requires at least 3 billion yuan of funds and a lot of scientific research investment, so the selection of astronauts can be described as one in a million.

The vast universe is still full of mystery to human beings, but according to the detailed rules for the selection and training of astronauts in various countries, there is no strict requirement on whether to have children. It's actually a lie for an astronaut to get married and get pregnant in space.

The first female astronauts in the United States and Russia got married and had children after going into space. The United States and Russia are both space powers in the world and space powers. It stands to reason that their selection of astronauts will be very scientific, but the first batch of female astronauts in both countries will get married and have children after completing their tasks.

1963, Russian astronaut valentina tereshkova took off on "Dongfanghong VI". Her father has been driving a tractor all his life, but he never dreamed that his daughter could become the first woman in space in the world.

34-year-old tereshkova and Dongfanghong-6 flew around the earth 48 times, with a cumulative flight duration of more than 70 hours. She is brave, calm, but wise and calm, and has made great contributions to the human universe.

Only five months after tereshkova returned from space, he married the then Russian astronaut nikolayev, and General Secretary Khrushchev personally attended their wedding.

Tereshkova gave birth to a healthy daughter after one year of marriage. Although the two astronauts divorced because of emotional factors, it turns out that tereshkova, who has been to space, did not affect her married life and normal delivery.

Coincidentally, in 1983, Sally Ride of the United States became the first female astronaut in American space history, and also the first astronaut to manipulate a robotic arm in space.

Sally Ride was only 32 years old when he went into space. She is also a beautiful young girl with no marriage experience.

Liu Yang, a Chinese astronaut, is the first female astronaut in China to go into space. She was only 34 years old and had no children when she carried out the Shenzhou-9 space mission.

From this perspective, astronauts have not given birth to children in space, and Liu Yang is not a case. On the contrary, female astronauts from all over the world seem to deliberately select female astronauts without children when performing space missions.

How big is the cosmic radiation, will it affect fertility? When it comes to space, many people first think of cosmic radiation. Scientific research shows that excessive radiation will do harm to human body, and radiation in space is much more complicated than that on earth.

Among the many radiation factors that astronauts face, the sun is the latest radiation, which is known as solar radiation, but the normal radiation produced by the sun is not as terrible as imagined.

According to scientists' measurement, astronauts stay in near-earth space for six months and receive about 6 joules of solar radiation, which is equivalent to the total radiation received by a person standing on the earth's rocks for 43 years.

The farther away from the earth, the more solar radiation astronauts receive. It is generally believed that the cosmic radiation received by astronauts in outer space will still be higher than the clinically recommended radiation carcinogenic limit.

In addition to solar radiation, astronauts will be influenced by other cosmic rays, solar flares, geomagnetic storms and many other cosmic activities.

If all radiation is taken into account, astronauts will stay in space for six months and receive about 300 joules of radiation, which has reached a lethal dose of X-rays.

But scientific research teams from all over the world will not put astronauts in such a dangerous environment. In order to protect astronauts, there will be a thick radiation shield outside the spacecraft to reduce all kinds of space radiation received by astronauts when performing space missions.

Moreover, astronauts rarely get out of the spaceship, so it is safer as long as they stay in the space capsule. It is generally believed that the radiation received by astronauts in the space capsule is about 300 times that on the surface of the earth.

It seems that the radiation received by astronauts is still very large, but after careful study, it is found that it will not take too long to perform a space mission, which makes the actual total radiation received by each astronaut much smaller and basically within the safe range.

Liu Yang's Shenzhou-9 space mission lasted for 13 days and received very limited space radiation. Moreover, even if she gets married and has children later and modern medical technology is developed, she can still pass various examinations to avoid fetal malformation.

Female astronauts have given birth, which is not conducive to carrying out tasks. In fact, when selecting pilots, it has been required that there should be no scars on the body. When the plane takes off at high speed, it will bring huge gravitational acceleration, even reaching 6- 10G.

If there is a scar on the body, then the large acceleration of gravity is likely to cause the wound to split again, which is very dangerous for the pilot himself and the plane.

The acceleration of gravity that astronauts have to bear is generally higher than that of airplanes, especially during takeoff and landing. If you have scars on your body, the potential risk is great.

If a woman has given birth, whether it is a caesarean section or a natural delivery, it may leave scars on her body, which is risky for a manned spacecraft running at high speed.

Training astronauts is very expensive. In order to protect astronauts and ensure the smooth progress of space missions, female astronauts who have given birth to children often need more training and inspection.

Although modern space technology has made rapid progress, there are still many uncertainties after the spacecraft enters space. It is safer to select infertile female astronauts to perform tasks.

That's why the first female astronauts in the United States, Russian Federation and China chose the unborn women, on the one hand, to ensure the smooth progress of the space mission, and on the other hand, to be responsible for the life of the astronauts.

Men react faster, so why send female astronauts into space to see many space powers, such as Gagarin in Russia, alan shepard in the United States and Yang Liwei in China? These great men in space history will choose first.

Men are physically better, more responsive and more adaptable. In that case, why do countries spend more money to send female astronauts into space?

First of all, women's delicacy and gentleness are not available to men, which can make up for men's psychological and personality defects and bring more wisdom to diversified space missions in the future.

As the saying goes, men and women are not tired, and the participation of female astronauts also enriches the members of the International Space Station and spacecraft, which helps to alleviate the psychological pressure of male astronauts to perform tasks for a long time.

Secondly, exploring space is the common dream of all mankind, and we can't just rely on men. Even if there are really space immigrants or deep flight plans in the future, women are still indispensable members.

Women are playing an increasingly important role in modern social life, and their advantages in medical care, scientific research, education and other industries are even more obvious than those of men. It is also the need of social development to let female astronauts participate in space exploration.

At the end, Liu Yang, as the representative and pride of women, carried Shenzhou-9 in the 20 12 space launch mission, which was a feat and breakthrough, and also a representative of women's wisdom.

Now, Shenzhou-12 and Shenzhou-13 manned spacecraft are about to be launched, and the Long March II F carrier rocket participating in the mission has entered the final assembly test. China's manned space technology has developed rapidly, which is the pride of China people.

Besides Liu Yang, Wang Yaping is a member of the Shenzhou-10 manned mission, becoming the second female astronaut in China to go into space.

Aerospace science and technology is the embodiment of the country's comprehensive strength. Although China's space flight started late, many space exploration missions, such as Shenzhou series, Tian Wen series, Tiangong series, Tianzhou series and Chang 'e series, are in full swing.

In addition to outstanding male astronauts, female astronauts also play an increasingly important role in space launch missions, and even make greater contributions to the space industry.

Women can not only enter halls and kitchens, but also enter space and become astronauts. Women are not as unreliable as rumors and deserve respect and admiration.