1993 Event Uranus passes Neptune (once every 171 years) 1989 Event Conjunction of Venus, Mars, Uranus, Neptune, Saturn and Moon 1986 Event Voyager 2, 1st Uranus flyby 1986 Event Voyager 2 makes 1st fly-by of Uranus (81,593 km), finds new moons 1977 Event Voyager 2 launched for fly-by of Jupiter, Saturn, Uranus, Neptune 1977 Event NASA launches Voyager 2 towards Jupiter, Saturn, Uranus and Neptune 1977 Event Rings of Uranus discovered during occulation of SAO 1948 Event Miranda, famous moon of Uranus, photographed for 1st time 1905 Birthday Gerard Kuiper, Dutch/U.S. astronomer, moons of Uranus, Neptune 1851 Event William Lassell discovers Ariel and Umbriel, satellites of Uranus 1841 Event John Couch Adams decides to determine position of an unknown planet by irregularities it causes in the motion of Uranus 1822 Death F William Herschel, German astronomer (discovered Uranus), dies at 85 1799 Birthday William Lassell, discoverer, satellites of Uranus and Neptune 1787 Event Titania and Oberon, moons of Uranus, discovered by William Herschel 1781 Event Sir William Herschel sees "comet" (really discovered Uranus) 1738 Birthday F William Herschel, German/English astronomer, discovered Uranus 1715 Event John Flamsteed observes Uranus for 6th time 1690 Event John Flamsteed observes Uranus without realizing it's undiscovered