Dreaming of space travel is increasingly common. There are so many science fiction movies and TV shows, popular songs, and space observation centers for people of all ages—even science-themed fashion fuels our curiosity. These ventures were first inspired by the results of pioneering space programs in the 1950s–1970s. In chronological order, the early programs in the United States were the Freedom Seven (1961, one astronaut per vehicle), Gemini (1961–1966, two astronauts per vehicle), and Apollo missions (1963–1972, with three astronauts per vehicle, which led to the first human moon landing in 1969) as well as the Skylab program (1973–1974), which launched the first U.S. space station. Other achievements from that era included the launch of the Sputnik, Vostok, and Luna spacecraft as part of the Soviet space program.
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