A Space Agency is an organization responsible for the planning, development, and management of space missions and research. These agencies conduct scientific studies, launch satellites, and explore outer space. They often collaborate with other countries and private companies to advance space technology and knowledge. Some well-known space agencies include the National Aeronautics and Space Administration (NASA) in the United States, the European Space Agency (ESA), and the Russian Federal Space Agency (Roscosmos). Each agency has its own goals, such as human spaceflight, planetary exploration, and Earth observation, contributing to our understanding of the universe.