This book shows how the emerging field of astrobiology investigates the nature of life in space. How did life begin? How common is it? Where do we fit in? These are the important questions that astrobiology seeks to answer. A truly interdisciplinary endeavor, astrobiology looks at the evidence of astronomy, biology, physics, chemistry, and a host of other fields. A grand narrative emerges, beginning from the smallest, most common particles yet producing...

Astrobiology, the study of life in space, is one of today's fastest growing fields of science. In this accessible and elegantly reasoned book, scholar and researcher Impey explores the foundations of this rapidly developing discipline, where it's going, and what it's likely to find. If Earth is not the only planet, it is so far the only living one that we know of. Impey reveals the incredible proliferation and variety of life on Earth, paying special...