This seminal monograph provides the essential guidance that we need to act as responsible ecological citizens while we expand our reach beyond Earth. The emergence of numerous national space programs along with several potent commercial presences prompts our attention to urgent environmental issues like what to do with the large mass of debris that orbits Earth, potential best practices for mining our moon, how to appropriately search for microscopic life, or whether to alter the ecology of Mars to suit humans better. This book not only examines the science and morals behind these potential ecological pitfall scenarios beyond Earth, it also provides groundbreaking policy responses founded upon ethics. These effective solutions come from a critical reframing for scientific settings of the unique moral voices of diverse Buddhists from the American ethnographic field, who together delineate sophisticated yet practical values for traveling through our solar system. Along the way, Buddhists fascinatingly supply robust environmental lessons for Earth, too. As much a work of astrobiology as it is one of religious studies, this book should appeal to anyone who is interested in space travel, our human environment in large scale, or spiritual ecology.