Can humans survive in space travel for a long time? What is the longest time?

Perhaps everyone has fantasized about space travel to explore the truth in space. But there is still a very important problem to be solved about space travel, that is, can we survive in space travel for a long time?

According to the current situation, human beings cannot survive in space for a long time. As of 20 19, only 8 people have been in space and survived for more than 300 days.

According to the professional research of medical scientists, from the various space problems and physiological systems faced by human beings, we finally come to a conclusion that the time of human beings in space should not exceed 120 days, because if it exceeds this time, our bodies may be irreversibly damaged.

The function of human body has not created conditions for our long-term survival in space. Because most people live on the earth from birth to death. We have adapted to the gravity environment, the air and everything the earth can touch, thus forming a fit with all aspects of the earth.

If nothing else, can human beings survive without the oxygen of the earth?

No But on the other hand, it is the oxygen that we live on that pushes mankind to death. Oxygen is both a life-saving medicine and a chronic poison.

We face two main problems in space. The first point is the problem of loose bones. The second point is the problem of nervous system disorder. On these two points, let's talk briefly, because there is no gravity suppression in space, bones will be completely liberated and become loose.

At the same time, because there is no gravity, our nerve vestibule will become disordered in space because it adapts to the environment of the earth, so people will become wobbly when walking.

In addition, NASA of the United States also used a pair of twin brothers Scott and mark kelly to conduct a series of comparative experiments between space and the Earth. The journal Science has the results of this group of controlled experiments. The experimental results reveal that space environment not only affects human nervous system and bones, but also affects human genes.

Especially in space, the telomeres of Scott cells have actually been lengthened, which means that Scott has a reverse growth. In addition, after studying his genes, it was found that Scott who returned from space had an increased risk of cardiovascular disease.

From the above information, we can get an answer that the space environment is harmful to human beings. We are still studying what is good for human beings, and there is no accurate answer yet.

Even with enough material support, human beings can't stand staying in space for a long time. If a braver person goes directly into space without wearing protective clothing and carrying any equipment, then human beings can only survive for 90 seconds.

Space is an environment close to vacuum. The air in our lungs will be sucked out by the vacuum environment, our alveoli will rupture, and the vacuum environment will expand our bodies. In 90 seconds, humans will suffocate. After that, the body is completely frozen, drifting aimlessly in space, and finally it is either broken or burned to ashes.

But according to the current situation of the earth, space migration is the way out for mankind. Maybe hundreds or thousands of years later, these problems about space will be overcome by human beings.