Lead
"The astronaut's DNA has changed!"
The researchers announced a shocking discovery that not only attracted a lot of attention from the scientific community, but also sparked a series of discussions about human survival in space.
Astronauts who work in space for a long time will undergo DNA changes due to the radiation of cosmic energy, which is the conclusion reached by scientists after studying the DNA of astronauts.
However, is it a good thing or a bad thing that astronauts' DNA has changed?
What does this mean?
How strong is space radiation that can change people's DNA?
How did scientists find out that the astronauts' DNA had changed?
Do humans really have a "second home"?
Will humanity end up in captivity on Earth?
Do humans have to live on Earth?
1. What causes the changes in astronaut DNA?
Ever since Yuri Gagarin embarked on a "space journey" as the first cosmonaut in human history to go into space, mankind's space exploration has been unfolding all over the world, and all this seems to have happened yesterday.
However, more than 60 years have passed since Yuri Gagarin became the first human to go into space, and mankind's space exploration has entered a new era.
Humanity's space exploration has gone through two phases: politically driven and dream-driven.
During the Cold War, the United States and the Soviet Union continued to compete in space exploration in order to win the space race, and the competition between the two countries also allowed mankind to take the first step in space exploration.
At this time, the American astronaut Shepard Weil was hailed as the hero of "the first American to go into space", however, at that time, the Soviet cosmonaut Yuri Gagarin was not only the first man to go into space, but also the first to go into Earth orbit.
In the competition between the Soviet Union and the United States, American astronaut Neil Armstrong became the first human in human history to land on the moon, and at the same time landing on the moon, he also said the words "this is a small step, a big step, a huge leap for mankind", becoming the first astronaut in human history to land on the moon.
After the competition between the United States and the Soviet Union, the pace of human space exploration has also taken the first step, and then, the pace of human space exploration has gradually accelerated, and mankind's space exploration has also entered the stage of dream driven.
At this stage, people advocated international cooperation, and the achievements of mankind in space exploration also made people marvel.
However, whether it is politically driven or dream-driven, people's research on space exploration starts from the benefits that space can bring to mankind, and people have little understanding of the harm of space to mankind.
However, in the cause of human space exploration, there has always been a very important question that has not been solved, that is, what is the impact of space on human beings?
In order to study what effect space has on humans, scientists studied the DNA of astronauts who have been working in space for a long time, and in this study, scientists found that the astronauts' DNA has changed.
Astronauts' DNA changes, why exactly?
Based on the study of astronauts' DNA, scientists have concluded that the astronauts' DNA changes are caused by the radiation of cosmic energy, which in turn mainly comes from cosmic rays.
Cosmic rays are an extremely powerful radiation, which comes from the stars in the universe, because these stars are very close to the earth, so the cosmic rays will also pass through the solar system and hit the earth, and when there are no other planets in the solar system blocking the cosmic rays from passing through the solar system, the cosmic rays will directly hit the earth.
However, because the earth has the protection of the atmosphere, so the cosmic rays will not cause harm to the human body, but the atmosphere on the earth can not completely block the cosmic rays, although the atmosphere has a certain shield for cosmic rays, but there are still some cosmic rays through the atmosphere to the surface, which has caused some harm to the human body.
Unlike the earth, there is no atmosphere in space, so cosmic rays can directly irradiate objects in space, at this time, cosmic rays will cause harm to objects in space, and astronauts work in such an environment, so astronauts are also very harmful to cosmic rays.
In addition to the harm of cosmic rays to astronauts, there are also the hazards of microgravity to astronauts and stress to astronauts, among these three hazards, cosmic rays are the most harmful, and microgravity and stress are also very harmful to astronauts.
All three of these hazards play a crucial role in human space exploration, and they are responsible for the DNA changes that cause astronauts to be exposed.
2. What happened to the astronauts' DNA?
The astronaut's DNA has changed, and what does this change look like?
There are two main changes in an astronaut's DNA: a change in gene expression and a change in a genetic mutation.
Of these two changes, most of the changes in gene expression are reversible, but some are irreversible, while most of the changes in gene mutations are irreversible, but some of the genetic mutations are reversible.
The change in gene expression is due to the fact that in space, the astronaut is exposed to cosmic rays, and this radiation causes changes in the cells in the astronaut's body, which leads to changes in the astronaut's gene expression, which is due to changes in the chromosomes within the nucleus, and this change is mostly reversible.
The genetic mutation is due to the fact that in the universe, the astronaut is exposed to a large amount of cosmic ray radiation, which will irreversibly change the astronaut's DNA, which is a genetic mutation, and most of the genetic mutations are irreversible.
Changes in gene expression are mainly due to changes in chromosomes in the nucleus, which lead to changes in astronauts' genes, most of which are reversible, while gene mutations are due to changes in the bases of DNA, which lead to changes in astronauts' genes, and most of these changes are irreversible.
What happens to the DNA of astronauts in space, and what does this change look like?
In a study of astronauts' DNA, NASA conducted a study on blood samples from 14 astronauts and found that the DNA molecules in the astronauts' blood samples were altered.
The changes in astronauts' DNA molecules are so small that they are difficult for ordinary people to notice, but for scientists, they can be observed after a certain amount of experimentation.
After studying the blood samples of 14 astronauts, scientists found that there are two main changes in the astronauts' DNA molecules: one is the change of the DNA base, which is a genetic mutation; The other is a change in the chromosomes in the nucleus, which is a change in gene expression.
A study of blood samples from 14 astronauts showed that the vast majority of astronauts had changes in gene expression, while a small number had genetic mutations.
Although most of these changes are reversible for human beings, there are also some irreversible changes, which have very important scientific and humanistic significance for human beings in space exploration in the future.
3. What is the significance of the change in the DNA of astronauts?
Human space exploration has a history of more than 60 years from the beginning to the present, and human space exploration not only allows human beings to have a deeper understanding of the universe, but also deepens human understanding of the universe, and the vigorous development of human space exploration has also provided support for various plans of human beings in space exploration.
However, mankind is also facing many problems in space exploration, including the harm of space to human beings, and the biggest of this harm is the harm of space rays to human beings.
There are two main types of harm to human beings caused by space rays: one is harmful to the human body, and the other is harmful to human DNA, and the harm to human DNA is the greatest.
The changes in the DNA of astronauts not only provide a reference for various plans of human beings in the space cable industry, but also provide a reference for the construction of space bases and the long-term residence of human beings in space exploration.
What does it mean that astronauts' DNA has changed?
Based on the study of astronauts' DNA, scientists concluded that the changes in astronauts' DNA were caused by radiation from cosmic rays, which would irreversibly alter astronauts' DNA.
However, what will be the impact of this irreversible change on astronauts?
Irreversible changes in astronauts' DNA, for astronauts, could lead to changes in astronauts' ability to adapt in space, and this change in adaptability may make astronauts more capable of surviving in space.
What changes have taken place in astronauts' DNA, and what impact will this change have on future plans for human space exploration?
Based on the study of astronauts' DNA, scientists have concluded that the changes in astronauts' DNA may improve human plans for space exploration, and also allow astronauts who work in space for long periods of time to better adapt to the space environment.
Mankind's plans for space exploration include not only manned landings on the moon but also manned Mars, and mankind's plans for space exploration also include long-term travel in space and long-term residence of humans in space, and these plans are inseparable from the construction of human space bases.
Plans for space exploration also include long-term human habitation in space, and many of these plans are already being implemented.
Mankind's plan for space exploration also includes long-term residence of human beings in space, and long-term residence of human beings in space is inseparable from the construction of space bases, and in the process of building space bases, various materials and equipment needed for long-term residence of human beings in space are also needed.
Mankind's plan for space exploration also includes long-term residence in space, and astronauts who work in space for a long time are also the backbone of human space exploration.
However, there are many plans for human beings in space exploration, including the future of human beings to immigrate to other planets, which is a grand plan for human beings in space exploration, and this plan is also the ultimate goal of human beings in space exploration.
There are many plans for human beings in space exploration in the future, and these plans are inseparable from human beings living in space for a long time, and the ultimate goal of human beings in space exploration is to immigrate to other planets, and to immigrate to other planets, it is inseparable from various materials and equipment needed by human beings to live in space for a long time.
epilogue
Humans may be confined to the ground