"What is it like to float weightlessly in the air? What happens if you vomit in your helmet during a spacewalk? How do astronauts go to the bathroom? Is it true that they don't shower? Can farts really be deadly in space? [The author], Mary Roach, has the answers. In this . . . informative young readers adaptation of her . . . Packing for Mars, Roach guides us through the irresistibly strange, frequently gross, and awe-inspiring realm of space travel and life without gravity"--Provided by publisher.