Martian immigrants from the United Arab Emirates

I believe you have seen many reports about interstellar migration in recent years. For example, Space Exploration Technology Company plans to send 1 10,000 people to Mars by 2050, and build a Mars city on the surface of Mars. The UAE also has plans to build Mars City before 2 1 17. In terms of time, it may be very difficult to realize the migration of Mars in the next 30 years, and it may be feasible to realize the migration of Mars in the next 100 year. However, before reaching Mars, human beings may face many problems, some of which may cause human beings to be trapped on the earth.

According to the scientific report published in the American journal Circulation on March 29th, 20021,researchers at the University of Texas in the United States have studied the heart conditions of American astronaut scott kelly and long-distance swimmer benoit leconte, and found that human hearts will contract if they stay in space for a long time or swim patiently on the earth.

Scott kelly, the longest American astronaut in space, lived on the International Space Station for nearly 1 year. During the space flight, scott kelly's ventricular weight decreased by 65,438+09% to 27%. Swimmer benoit leconte once tried to cross the Pacific Ocean. Although his attempt to cross the Pacific Ocean failed, in the past six months, his swimming distance has reached 282 1 km, and the average swimming time is close to 6 hours a day. During the crossing of the Pacific Ocean, benoit leconte lost 20% to 25% of his left ventricle weight.

In this study, both subjects lost weight in their ventricles. What happened? In the future, if humans want to immigrate to Mars, it may take a long time to fly in space. It stands to reason that these astronauts who go to Mars will lose weight in their hearts. Will these problems pose a threat to the health of astronauts? Will this problem cause mankind to be trapped on the earth forever?

Benjamin Levin, a professor of internal medicine at the University of Texas who participated in the study, said that our human heart is very adaptable. When we enter the weightless environment in space, our hearts will contract to adapt to the changes in space gravity. Although swimmer benoit leconte doesn't fly in space, his heart will contract similarly due to swimming in the water for a long time, which will also offset some gravity. Although the study found that their hearts had shrunk, no side effects caused by heart atrophy were found, and all functions were normal.

In addition to finding that astronauts' hearts will contract during long-term space flight, scientists have also found that the structure and function of astronauts' brains will also change. According to the research report published in Science Progress, scientists studied and analyzed the brain structure of 1 1 astronauts. The average continuous stay time of these astronauts on the International Space Station is 17 1 day. Before these astronauts went into space, the researchers performed diffusion magnetic resonance imaging on these astronauts. After returning to Earth, the researchers also performed diffusion magnetic resonance imaging on these astronauts twice to study the brain changes of astronauts before entering space and after returning to Earth. The results showed that when these astronauts were in microgravity and low gravity space environment for a long time, their white matter and gray matter distribution changed, their ventricles expanded and cerebrospinal fluid increased.

The reason why astronauts' brains have such changes is similar to the heart situation mentioned above. When astronauts enter the microgravity and zero-gravity space environment, the nervous system will adapt to the space environment through these changes. Although the brain structure and function of these astronauts will change to some extent, they will return to normal level after returning to earth for a few months.

It can be seen from these studies that astronauts will be in a zero-gravity environment for a long time when they fly to other planets such as Mars, and their bodies may undergo similar changes, but when they arrive at other planets, these changes may be restored to adapt to the environment of other planets. Therefore, even though there may be unexpected changes, these changes are not enough to keep us human beings trapped on the earth. Moreover, in the future, we humans may develop spacecraft that can produce gravity similar to the earth's surface. In these spaceships, we can live and work like on the surface of the earth, and these physical problems mentioned above will be avoided.