In the past century alone, we have witnessed groundbreaking technological innovations quickly displace established industries, thereby opening up entirely new markets or fields of research. Such "disruptive technologies" are hard to predict in advance, and yet, they have the potential to significantly alter the course of history. Written by one of the world's leading space applications experts, this book addresses the concept of disruptive technologies in the space arena, including microsatellites, the development of satellite constellations, and reusable launch vehicles. The book presents several case studies in the field, and discusses how and why modern space technologies are so unique. It covers current examples of disruptive space businesses, the pros and cons of such disruption, key emerging trends, and possible developments on the horizon.