This authoritative Encyclopedia explores the dynamic fields of space policy and governance. Authored by over 50 expert scholars and practitioners from across the globe, it delves into the key concepts, governing bodies, and challenges involved in regulating the space sector. Entries examine the complex task of governing national and international space activities, underscoring the need for actors to communicate based on a common understanding. The Encyclopedia provides insights into topics ranging from cybersecurity and sustainability to astropolitics and space law, critically engaging with the definition, core issues, and future directions of each aspect. Key Features: Analyses a diverse variety of approaches to each theme Fully cross-referenced to present a broad yet detailed overview of space governance Includes a list of further recommended readings for each entry, covering fundamental principles as well as cutting-edge research Students and researchers in public policy, regulation and governance, political science, public international law, and international relations will greatly benefit from this comprehensive Encyclopedia. It is also an invaluable resource for policymakers, space industry professionals and military personnel seeking to expand their knowledge of developments in space policy and governance.