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1: Radiation - Any planet/moon/or even space that is not protected by an atmosphere like Earth experiences radiation. That is a major reason why space travel is so dangerous. Radiation is everywhere in space. its like you can't escape it!

2: they also have to worry about bone and muscle degeneration caused by spending all of that time in microgravity (exercise can also slow this problem but not prevent it)

3: when the shuttle is fully loaded with the oxygen they need, it is extremely dangerous, so if one of the crews on the shuttle fart, they will interfere with the oxygen

4: they suffer from boredom, cabin fever and muscle atrophy

5: it is very difficult to digest food because there is no gravity acting on their body. Also, it is very bad for their bodies to be in an anti gravity for such a long period of time.

6: Lack of food, lack of air and warmth. Anything that you need 2 survive.

Hoped that helped answer your question! =)

For more information click on this link/search up and learn more:

http://spacefeelings.com/astronaut-outer-space-food.shtml

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14y ago

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