Yuri Gagarin was the first recorded man in space on April 12, 1961, and NASA has been able to send countless scientists to space for research objectives on how to better human living ever since.
Apart from helping us in studying and answering fundamental issues about our place in space and the history of our solar system, space flight and exploration have also aided in the areas of communication, technology, and the diffusion of inventions.
I won't waste your time with so many words, so I will just go straight to discuss why astronauts can't walk immediately after landing on Earth.
You may have noticed that after astronauts land on Earth, they are placed in wheelchairs until they can walk. Have you ever wondered why this is so?
There are numerous issues linked with space travel, including ionizing radiation dangers, weightlessness, cardiovascular-related issues, balance disorders, eye problems, nasal congestion, and the mother of all changes in the immune system.
The human body experiences weightlessness in space, but individuals on Earth are well suited to physical conditions. As a result of the weightlessness in space, the human body begins to alter in ways such as bone and muscle mass loss. Because there is no gravity in space, the muscles that were once necessary to maintain our body posture have become weak and smaller.
When astronauts return to Earth, they see the effects of not utilizing their muscles while in space. According to scientific data, they are also five times heavier than their normal body mass. As a result, they are placed in wheelchairs for three to four days until they can regain their functioning posture.
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