Going to space is hard on the human body for a number of reasons. The microgravity environment causes muscle and bone loss and leads to fluids pooling in the upper parts of the body. Being in space worsens eyesight, can alter the immune system, and can lead to nausea similar to motion sickness. Not to mention the threat of radiation, which can increase the likelihood of developing cancer and other diseases. But there’s another aspect of space that’s tough
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