 Pioneer 6 was the first satellite to orbit the Sun, launched on December 16, 1965.The other planets were first flown by in 1965 for Mars by Mariner 4, 1973 for Jupiter by "Pioneer 10", 1974 for Mercury by Mariner 10, 1979 for Saturn by "Pioneer 11", 1986 for Uranus by "Voyager 2", 1989 for Neptune by "Voyager 2".In 2015, the dwarf planets Ceres and Pluto were orbited by "Dawn" and passed by "New Horizons", respectively.