Exploring the cosmos has proven to be mankind's greatest adventure, and this profusely illustrated guide for readers 9 to 12 maps the milestones along the way. Each planet in our solar system is discussed in a two-page spread, while short introductions are provided for such luminaries as Galileo, Copernicus, Newton, Herschel, and Hubble. Along with an overview of space travel and the most important missions undertaken so far, the book includes information on what it takes to become an astronaut, a glance ahead to the next phase of exploration, a look inside the International Space Station, and a quiz.