When astronauts go to bed in space, they do not lie down.There is no mattress, no pillow and no blanket tucked around them.

Sleep deficiency is pervasive among astronauts before and during space flight, and the reported incidence of sleep-promoting medication use is 20 times greater than the proportion of Americans ...

Trying out the increasingly popular Scandinavian sleep method seemed like an obvious choice to avoid battling over the ...

Russian astronaut Vasily Tsibliyev hadn’t had a good night’s sleep for 12 days. He was being kept awake on purpose, as part of a study about sleeping on board the space station Mir. On the 13th day, ...