Astronauts stay in space for a year, and the gene mutation is 7%. If they stay for 10 years, will they still be human?

Still human, of course. This is just a wrong expression. It is not the gene mutation of% 7, but the change of gene expression mode of% 7. With the development of science and technology, human beings pay more and more attention to space. There are two main reasons: first, because of human curiosity, they are eager to solve various mysteries in space. This is because the resources on the earth are limited, and even if they are used for immigration, resources from outer space should be exploited. The space environment is very different from the earth environment. The space is in a vacuum environment. There is no air and gravity. Then humans built the International Space Station.

The International Space Station has two main tasks: one is to use it as a transit station for space exploration, and the other is to test whether human beings can survive in space and whether it will have an impact on the human body. After so many years of experiments, scientists finally feel some signs: first, if astronauts stay in space for a long time, their brains and brain fluids will change.

The role of cerebrospinal fluid is to protect the fluid in the cerebral cortex. After the astronauts returned to the earth, they found that some changes had taken place in the astronauts' brain fluid, and the contents of white matter and gray matter decreased. After a period of recovery, the gray matter in astronauts' brains increased and returned to normal level, but the white matter did not increase, which also shows that this change is irreversible. Although it has not affected the body so far, it is not clear whether it will affect the body in the future. This is also a shadow for scientists who immigrated to outer space, because these irreversible changes also show that human beings are not suitable for the body. Living in a gravity environment.

However, in subsequent studies, it was found that these 7% gene expression changes had no impact on the human body and would not cause adverse effects. With the progress of science and technology, there must be a way to solve the influence of weightlessness on human body when astronauts board space in the future.