The Apollo Program, also known as the Apollo Missions, was a series of spaceflight missions undertaken by NASA between 1961 and 1975, with the goal of landing humans on the Moon and returning them safely to Earth. Other synonyms for the Apollo Program include the Lunar Program, Moon Program, and NASA Moon Landing Missions. Additionally, the Apollo Program is often referred to as the Space Race, as the United States competed against the Soviet Union to achieve various space exploration milestones. Although the Apollo Program ended decades ago, its legacy continues to inspire scientists, engineers, and space enthusiasts around the world.