For astronauts in space, sleeping in a zero-gravity environment surrounded by loud fans, bright lights and cramped quarters can be an issue. We discuss some of the bodily systems behind sleep and how astronauts in space for months on end deal with these challenges.
Dr. Emmanuel Urquieta, from the Center for Space Medicine at the Baylor College of Medicine, joins Viewpoints this week to help us understand some of the health impacts of spending time in space and the hurdles that come with longer missions like sending humans to Mars.