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https://www.nasa.gov/audience/foreducators/stem-on-station/ditl_sleeping/
Jun 08, 2015 · Generally, astronauts are scheduled for eight hours of sleep at the end of each mission day. Like on Earth, though, they may wake up in the middle of their sleep period to use the toilet, or stay up late and look out the window. Different things such as excitement or motion sickness can disrupt an astronaut's sleep pattern.
https://www.nasa.gov/feature/ames/nasa-research-reveals-biological-clock-misalignment-effects-on-sleep-for-astronauts/
Both before and during astronauts’ flights, changes in biological clocks, or circadian rhythms, contribute to sleep deficiency and increase the use of sleep-promoting medications. For most people, the circadian rhythm is a little longer than 24 hours. On Earth, our daily exposure to light from the sun keeps us synchronized to the 24-hour day.
https://www.mvorganizing.org/how-many-hours-do-astronauts-sleep-in-space/
May 01, 2021 · Do astronauts sleep well in space? In space, sleeping on the floor is just as comfortable as sleeping on the wall: there is no difference in the weightless environment. Even though astronauts are allotted about 8.5 hours for sleep every day, many of them have reported needing only about 6 hours …
https://www.nasa.gov/vision/space/livinginspace/03jun_naps.html
Despite NASA recommendations that astronauts sleep 8 hours a day, they usually don't. Strange sights and sounds, the stress of riding a powerful rocket, the lack of a normal day-night cycle--all these things tend to keep space travelers awake. Studies show that astronauts typically sleep 0.5 to 2.5 hours less than they do on Earth.
https://www.space.com/26829-astronauts-space-station-sleep-deprivation.html
Aug 14, 2014 · Researchers discovered that 64 astronauts on board 80 space shuttle missions, and 21 astronauts on the International Space Station slept for just six hours …Estimated Reading Time: 3 mins
https://medium.com/the-cosmic-companion/what-astronauts-can-teach-us-about-sleeping-in-space-57f98e465940
May 02, 2020 · “Generally, astronauts are scheduled for eight hours of sleep at the end of each mission day. Like on Earth, though, they may wake up in the middle of their sleep period to use the toilet, or ...Estimated Reading Time: 6 mins
https://www.sciencetimes.com/articles/27055/20200827/sleeping-space-microgravity-changes-sleep-structure-astronauts.htm
Aug 27, 2020 · Moreover, the researchers found that the non-REM and REM sleep patterns of the cosmonauts and astronaut have decreased by 14.1% for non-REM and 25.8% for REM. It takes about 90 minutes for them to ...Estimated Reading Time: 4 mins
https://www.washingtonpost.com/news/morning-mix/wp/2014/08/08/study-sleepless-in-space-astronauts-rely-on-sleeping-pills-unsuited-to-hazardous-occupations/
Aug 08, 2014 · Though NASA recommends eight hours of sleep for astronauts, the study said as a group they averaged just less than six hours on shuttle missions and just more than six hours …Estimated Reading Time: 4 mins
https://www.discovermagazine.com/the-sciences/astronauts-didnt-sleep-so-well-on-the-moon
Nov 17, 2017 · The sleep problem got a little better on Apollo 15 thanks to NASA’s growing understanding of the astronauts’ needs on the Moon. Which was very good timing. This was the first extended mission with a longer stay and more demanding …Estimated Reading Time: 8 mins
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