συχνά Στρογγυλοποίηση προς τα κάτω ειδοποίηση astronaut sleeping bag γενεσιολογικά Προσωποποίηση Τέλος πάντων
Getting to sleep in space is hard – and not exactly restful for the mind and body - RocketSTEM
Amazon.com: Eanpet Sleeping Bag Kids Toddler Nursery Cotton Quilted Slumber Bag Blue Nap Mat Sleep Blanket Soft Warm Boy Spaceman Printed Sleeping Sack Travel Sleepovers Astronauts with Pillow : Home & Kitchen
File:Megan McArthur in her sleeping bag.jpg - Wikimedia Commons
Our World: Sleeping On Board the International Space Station - YouTube
Astronauts on Long Space Missions Will Need Earth-like Sleep Habits