This book presents a comprehensive analysis of the Outer Space Treaty and its vital connection to various facets of international law governing outer space. We will thoroughly examine the key provisions of the United Nations Charter alongside relevant cases adjudicated by the International Court of Justice (ICJ) to illuminate their implications for preventing the militarization and weaponization of space. Each chapter will delve into the historical context and legal frameworks that have shaped our current understanding of outer space activities.Moreover, we will investigate how international treaties and agreements can effectively align with established laws to confront issues like the militarization and weaponization of outer space. By utilizing case studies and expert insights, we will reveal both the challenges and opportunities that arise in regulating activities beyond our planet. Space-faring nations have developed multilateral and bilateral treaties to govern these activities. However, the hidden selfish and political motives behind these policies often remain unexamined, leading to a pervasive lack of awareness about the ineffectiveness of these treaties in promoting peaceful endeavors. This book aims to shed light on the treacherous actions of these nations surrounding the concept of peaceful activities in space.