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NASA begins new astronaut sleep study | Human World | EarthSky
Grizzly Gear Emergency Extra Large Thermal Sleeping Bag (Accommodates 2 Adults)- XL 84" x 36" NASA Mylar Waterproof Heat Retaining Survival Tent- for Hiking, Camping, Car and More - Walmart.com
Hi-tech sleeping bags could prevent astronauts' eyeballs from being squashed - pennlive.com
L.L.Bean's New Sleeping Bag Uses Insulation Originally Developed for NASA