NASA's new sleeping bags could prevent eyeball 'squashing' on the ISS | Engadget
Nasa: Sleeping bag could help prevent squashed eyeballs in space - BBC Newsround
High-tech astronaut sleeping bag may alleviate health problems on long journeys to Mars | CBC Radio
How Do Astronauts Sleep in Space
Sleeping in space | Canadian Space Agency
Space Sleep (2002) | NASA
More Than 50% of the Astronauts Experience Vision Problems; High-Tech Body-Sucking Sleeping Bag May Help Treat 'Squashed Ice' Syndrome | Science Times
How do astronauts sleep in space? | Science Illustrated
ESA - Wubbo space sleeping bag
Life on space station means astronauts get an hour's less sleep than on Earth | London Evening Standard | Evening Standard
Everyday Life on the ISS | JAXA Human Spaceflight Technology Directorate
NASA begins new astronaut sleep study | Human World | EarthSky
Michael L-A on Twitter: "An interesting aspect of being in space is that it takes a while for your dreams to catch up. It can be a bit jarring when you're dreaming