Resilient Space Systems Design: An Introduction demonstrates how quantitative resilience methodologies can be applied to a wide range of space systems as an extension of conventional systems engineering processes. This holistic approach includes establishing core definitions, requirements definition, mathematical modelling, and cost and performance trades. It addresses the full spectrum of threats facing modern space systems, from natural hazards to hostile actions, and provides a comprehensive framework for ensuring mission continuity. The new edition includes expanded discussions of the systems engineering process, the relevance of qualitative resilience properties, and the use of algorithms and artificial intelligence to increase resilience. It examines the effects of various threats on space systems and ground elements, with particular attention to emerging challenges posed by proliferated low Earth orbit constellations implementing mesh networks. The book also features extended coverage of calculation of avoidance, recovery, reconstitution, and a single resilience value over multiple capabilities, threats, and mitigations. This book is intended for aerospace engineers, space systems engineers and architects, communications engineers, and network engineers working on improving the survivability and operational continuity of commercial, civil, and military space assets.