Aerospace companies are businesses that design, manufacture, and maintain aircraft, spacecraft, and related systems. They play a crucial role in the aviation and space industries, producing everything from commercial airplanes to satellites. Major players in this field include Boeing, Airbus, and Lockheed Martin, which contribute to both civilian and military applications. These companies also focus on research and development to innovate new technologies, improve safety, and enhance efficiency. They often collaborate with government agencies like NASA and the European Space Agency to advance space exploration and develop cutting-edge aerospace solutions.