The longest amount of time anyone has spent in space was roughly 438 days. Think you could handle the isolation? When put in confined spaces for long-term space travel, astronauts commonly become depressed and experience abnormal weakness, and a loss of energy. If you've dreamt of visiting Mars since childhood, we believe in you! But it's probably smart to set some realistic expectations. Uncover the "third quarter phenomenon" and NASA personality criteria in the following video, then learn more about the outer space lifestyle.

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