The first recorded man in space was Yuri Gagarin on 12th April 1961 and ever since that breakthrough, NASA has been able to send numerous scientists to space for research purposes on how to improve human living.
Space travel and exploration have brought a lot of improvement to the human race, apart from helping us to study and answer fundamental questions about our place in space and the history of our solar system, It has also helped in the aspect of communication, technology, and diffusion of innovations.
Space travel has also given us more knowledge about gravity, our atmosphere and letting us know they are other planets apart from our dear earth.
I wouldn't bore your day with so many words, I will go straight to my article regarding the title.
Over time now, you might have noticed that after astronauts land on earth they will be placed in wheelchairs until they can walk. Have you ever asked yourself why is that so?
Well, they are a lot of problems associated with traveling to space such as Dangers from ionizing, weightlessness, cardiovascular-related problems, balance disorder, eyesight disorder, nasal congestion, and the mother of all change in the immune system.
In Space, the human body experiences weightlessness while on Earth humans are well adapted to physical conditions. Therefore in response to the weightlessness in space, the human body begins to change such as loss of bone and muscle mass and since there's no gravity in Space the muscles are no longer required to maintain our body posture and they become weak and smaller
When astronauts return to Earth they begin to feel the impact of not using their muscles while in Space. And according to scientific reports, they are five times heavier than their usual body mass. Hence they are placed on wheelchairs until three to four days when they could recover their working posture back.
Thanks for your time.
Image credit: Google
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