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When we are on Earth, gravity is constantly pulling blood down towards our feet. But in space, there is no gravity pulling it in any particular direction. This can cause blood to move towards the head, resulting in a puffy face, headaches, and even vision problems.

Another effect of zero-gravity is muscle and bone loss. Without the constant pull of gravity, muscles and bones don't have to work as hard, which can cause them to weaken and deteriorate. This is why astronauts need to exercise for hours every day to maintain their muscle and bone mass.

Even something as simple as writing can be affected by zero-gravity. Without the weight of the pen, it's difficult to apply enough pressure to make the ink flow properly.

When astronauts return to Earth, they often experience a variety of physical effects as their bodies readjust to gravity. They may feel dizzy, weak, and disoriented.

Despite these challenges, many astronauts feel that the experience of being in space is worth it. It gives them a unique perspective on our planet and the universe beyond.

#shorts #space #science #sun #earth #spacescience #planets #blackhole #galaxies #moon #saturn #mimas #titan #enceladus #astronaut #gravity
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Attribution

Thanks to :
NASA STI Program -
   • Lockheed Stabilizer System for Space Exerc...  
Fghhhg -
   • American astronaut Christina Koch returns ...  
ScienceAtNASA -
   • #EarthDayAtHome with Jessica Meir on the S...  

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