NASA, or the National Aeronautics and Space Administration, is the United States government agency responsible for the nation's civilian space program and for aeronautics and aerospace research. Established in 1958, NASA has been at the forefront of space exploration, conducting missions that have expanded our understanding of the universe. From the historic Apollo moon-landing missions to the ongoing Mars rover explorations, NASA has played a crucial role in advancing space science and technology. The agency also collaborates with international partners and private companies to further its goals, making significant contributions to both scientific knowledge and technological innovation.