Circadian Rhythm

Circadian Rhythm refers to the natural, internal process that regulates the sleep-wake cycle of living organisms, including humans, based on a 24-hour day. In space and astronautical engineering context, circadian rhythm is an important consideration for astronauts who experience disrupted sleep patterns due to the lack of a natural day-night cycle in space. Maintaining a regular sleep-wake cycle is crucial for the health and well-being of astronauts during long-duration space missions. To mitigate the effects of disrupted circadian rhythms, spacecraft are equipped with lighting systems that mimic the natural light-dark cycle of Earth. Additionally, astronauts may use sleep aids or medication to regulate their sleep patterns. Research is ongoing to better understand the effects of spaceflight on circadian rhythms and to develop more effective countermeasures to mitigate these effects.
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