This book analyses the ability of existing international law to address common vulnerabilities in connection with the recent emergence of small satellites, and how finding consensus in this context can pave the way to the sustainable development of space. The rise of small satellite constellations has produced a paradigm shift in the use of space capabilities, suddenly making them far more available and affordable. This development has in turn sparked substantial global interest in finding ways to capitalize on the new opportunities and to mitigate the challenges posed by these mega-constellations. This work targets precisely that need, offering a valuable asset for readers from the commercial space industry, investors, lawyers, researchers, academics and policymakers alike.