NASA, short for the National Aeronautics and Space Administration, is the United States' space agency responsible for space exploration, scientific research, and technological innovation. Established in 1958, NASA conducts activities such as human spaceflight, robotic exploration, Earth observation, astrophysics research, and more. Notable achievements include the Apollo program's Moon landing in 1969 and ongoing missions to space and other celestial bodies. NASA also studies Earth's environment and collaborates with partners to advance space science and inspire the public through education and outreach programs. The agency's work has expanded scientific understanding and led to technological advancements. For detailed information, referring to the official NASA website is recommended.