article: Rings of Neptune
links: Voyager 2 Telescope 1998 1984 Naiad (moon) Saturn (planet) Urbain Le Verrier 2005 Neptune (planet) 2003 Despina (moon) Hubble Space Telescope François Arago Galatea (moon) 1980s Arc Thalassa (moon) John Couch Adams 1989 Johann Galle French Revolution Uranus (planet) 1985 William Lassell Optical depth