Galileo and Kepler dreamed of the possibility of space exploration, although its reality was later underappreciated and even challenged by social, ideological, and scientific critics as a diversion from our problems on Earth. tells the fascinating stories of how space exploration places us in unusual situations that force us to come up with new ideas about nature. This strong connection between scientific exploration and scientific change makes us aware of a new panorama of problems, dangers, and opportunities that leads to new solutions and technologies that would have been unimaginable under old perspectives. Thus, the exploration of Venus led to the discovery of the destruction of Earth's Ozone layer. This discovery will save hundreds of millions of lives in the coming centuries. As we explore space, we learn to protect our planet from catastrophe, and all the while we change drastically our ideas about the nature of the universe. With its account of serendipity and splendor, the book invites readers on an exciting journey in which, step by step, we are shown the crucial importance of space exploration for humanity.