Book Description From the thousands of digital images collected by NASA's unmanned probes since the 1960s, those bound in this volume are nothing less than works of art, selected for their beauty as much as their subject matter. The resulting book consists of two parts: the first is a spectacular visual tour of the solar system, with panoramic space scapes that each span four unfolding pages; the second is a series of beautifully written essays that explain the story behind these photographs, the history of the probes' journeys, how they work, and why they were built.