Van Winkle’s answers questions about astronaut sleep, including what time zone is used, pillows, and parasomnias.

Do they end up getting their hard eight?

No. As hard as they try to get comfy, most astronauts don’t get enough rest. Many are routinely sleep deficient, logging just six hours of sleep every 24 hours.

However, some astronauts speculate that these short sleep sessions may be the result of the body’s feeling less fatigued in a microgravity environment. Less fatigue may equal less sleep need.

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