Of all the questions astronauts are asked by kids, the most frequent one is "How do you go to the toilet in space?" This book not only answers that question, but many others about the effect of zero gravity on the human body: How do you brush your hair in space? What happens when you sweat? What does food taste like? The best thing is that the answers are provided by Dr. Dave Williams, a NASA astronaut who speaks from first-hand experience. Written for kids ages 7 to 10, this book uses age-appropriate language to explain the different phenomena that astronauts encounter during a mission. The bright, colorful pages, short blocks of text accompanied by photos and humorous illustrations make this a very attractive choice for young readers. The opening message from Dr. Dave empowers kids to follow his example by believing in themselves and following their dreams.

Will humans ever be able to live on other planets? Former NASA astronaut Dr. Dave Williams is the person to ask.  It turns out that Earth is a pretty good place to live. Finding other habitable environments in space is no easy task: temperatures on Mercury are ten times hotter than on Earth; winter on Neptune lasts about forty years, and Uranus is ten billion miles (sixteen billion kilometers) away. But there is one planet that looks promising: Mars. Even though it takes six months to get there, Mars most closely resembles Earth. So what would it take to make it habitable—and what would life look like there? As in the other three titles in the Dr. Dave: Astronaut series, this book demystifies space travel. The science is explained in simple terms while the sense of adventure is ever-present. This book belongs in the hands of every child interested in space, and in every classroom where STEM is taught.