An Aerospace Agency is a government or private organization responsible for the research, development, and management of activities related to air and space travel. These agencies focus on various aspects of aerospace technology, including the design and construction of aircraft and spacecraft, as well as conducting scientific research in the atmosphere and outer space. One of the most well-known examples is the National Aeronautics and Space Administration (NASA) in the United States, which has been instrumental in space exploration and aeronautics research. Other countries have their own aerospace agencies, such as the European Space Agency (ESA) and Roscosmos in Russia, each contributing to advancements in aerospace technology and international collaboration in space missions.