Astronauts experience unique challenges in space from "summary" of Rocket Science: A Beginner's Guide to the Fundamentals of Spaceflight by Andrew Rader
Astronauts face a multitude of unique challenges when they venture into the vast expanse of space. One of the most obvious obstacles is the lack of gravity. In space, everything is weightless, which can be disorienting for the human body. Astronauts must adapt to this environment by learning how to move, eat, and even sleep without the aid of gravity. Another challenge that astronauts face is radiation. In space, they are exposed to high levels of radiation from the sun and other cosmic sources. This radiation can be harmful to their health, so astronauts must take precautions to protect themselves. They wear special suits and spend limited amounts of time outside of the spacecraft to minimize their exposure. Space is also an isol...
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