How long can man live in the universe?

This is really an unanswered question. NASA with leading scientists is trying to extend this time step by step, but things seem to be becoming more and more difficult.

How long people live in the universe

The maximum time that a normal person could live in the universe was 437 days , this study was done by Valeri Polyakov nearly 20 years ago on his second journey. lasts 240 days. Another traveler, Sergei Krikalev, also spent 803 days in space in about six trips.

As we know , the universe is a harsh environment for humans , the evolution of the human body is to suffer from the forces of the earth's gravity and not to adapt to life in Space.

Our muscles have to move continuously to accommodate gravity on the earth, but it is different in a space without gravity. Since there is no gravity, muscles are not active and the muscle groups shrink is inevitable. The most affected is the heart, the muscles in the neck and the muscles in the calves are also slightly shrunken. Besides, the bone is also affected by not being subjected to a bit of body pressure, as it is on the ground. So the bone structure also gradually becomes thinner and more porous, at which point our bones can easily break.

The rate of osteoporosis on body parts when in the universe.

There is a lot of evidence that the longer you stay in the universe, the more likely it is that your immune system will be disordered . Because in this environment there are too many advantages for pathogens to arise, and if the immune system is compromised, it will cause hypersensitivity reactions to the surrounding environment.

Besides the problems of gravity, radiation also has a potential threat. In some studies, scientists have given the number of 27 thousand miles as the distance for the Earth's magnetic field to protect us. from radiation. Out of that limit astronauts are influenced by many different radiation rays and it is easy to see that when astronauts close their eyes, they can still "see" the light due to the This radiation beam hits their optic nerves . Direct exposure to radiation can cause human cells to be damaged and mutate leading to cancer or genetic effects. Some organs in the body are quite sensitive to radiation rays and cause their function to be impaired, such as the immune system, the bone marrow system, especially the eyes that cause cataract risk. .

And the paradox happens when the more scientists try to find ways to protect astronauts from exposure to harmful radiation, there is something called secondary radiation that makes every effort. Their force returned to zero because it made the shielding more careful, the more they were exposed. This is because these radiation rays that touch the shielding material can emit gamma rays accompanied by neutron particles carrying a lot of energy and, to some extent, directly affect the astronauts.

So NASA checked the radiation exposure very strictly, they always monitored the contact of each member of the crew and maintained this very carefully. By the time the energy of these radiation rays hit the threshold, astronauts would immediately be banned from temporary flight.