Have you ever wondered how astronauts stay healthy in space? What if an astronaut gets sick on the space station? Does snot run in space? This fascinating photo-illustrated look at space and medicine explores how scientists and physicians study astronauts in space, how they help keep them safe, and what we've learned about the human body through space exploration. Questions from real kids and answers form from astronauts, along with photos from NASA, combine for an out-of-this-world exploration of health.