With his particular questioning style, Jacques Arnould takes us on a journey through the history of space exploration and utilisation from a multidisciplinary perspective. This book deals with philosophical and societal questions, national and international policy, legal and responsibility aspects. By asking the right questions, Jacques helps us understand many of the questions most humans ask themselves about why, what, for whom, for how long and how humanity will (or should) expand its presence in and benefit from outer space. The French CNES is the first space agency that decided to employ an expert in the ethics of space activities, and the International Space University and the University of South Australia are the only where space ethics is regularly taught in its programs as part of its unique multidisciplinary curricula.