Office Home Office Home About Us Key Topics HomeBureaus & Offices > Bureau of Oceans and International Environmental and Scientific Affairs ...Office of Space Affairs hide Office of Space Affairs Science Our Mission The Office of Space Affairs carries out diplomatic and public diplomacy efforts to strengthen American leadership in space exploration, applications, and commercialization by increasing understanding of, and support for, U.S. national space policies and programs and to encourage the foreign use of U.S. space capabilities, systems, and services. Key Topics Space Diplomacy Exploration & Commercialization Preserving Outer Space Global Navigation Satellite Systems Satellite-Based Earth Observation Space Diplomacy The President’s National Strategy for Space establishes forthrightly that securing the scientific, commercial, and national security benefits of space is a top priority for this Administration. Learn More Space Diplomacy Exploration & Commercialization The International Space Station is an unprecedented achievement in global human endeavors to plan, build, operate, and utilize a research platform in space, providing over 17 years of continuous human presence in space. Learn More Exploration & Commercialization Preserving Outer Space Our society depends on space technologies and space-based capabilities for communications, navigation, weather forecasting, and much more. Learn More Preserving Outer Space Global Navigation Satellite Systems The enormous scientific, economic and national security benefits provided by the U.S. Global Positioning System (GPS) has encouraged other countries to pursue regional or global navigation satellite systems, e.g., Europe (Galileo), Japan (QZSS), India (NAVIC), China (Beidou), and Russia (GLONASS). Learn More Global Navigation Satellite Systems Satellite-Based Earth Observation Orbital satellites are revolutionizing our understanding of many critical earth system processes, including disaster warning and relief, agricultural productivity, epidemic outbreaks, climate, and weather. Learn More Satellite-Based Earth Observation