article: Neptune
links: Astronomer Royal Voyager 2 Acceleration 3 Juno Earth Miles per hour Saint Petersburg Celsius China National Space Administration Berlin Observatory Poseidon Janus France Uranus George Airy NASA Galileo Galilei Naiad (moon) Kilometres per hour European Space Agency Urbain Le Verrier S/2004 N 1 Neptune (god) Science (journal) Nereid (moon) Johann Gottfried Galle Apparent magnitude Fahrenheit James Challis Circular orbit Despina (moon) Small Dark Spot Royal Greenwich Observatory Hubble Space Telescope Roche limit Sun Olin Eggen Galatea (moon) Thalassa (moon) Ceres (dwarf planet) Occultation Saturn Moons of Neptune 2 Pallas Heinrich d'Arrest John Couch Adams 6 Hebe Geometric albedo François Jean Dominique Arago Proteus (moon) Neptune (mythology) Great Dark Spot Friedrich Georg Wilhelm von Struve 7 Iris Roman mythology 4 Vesta Uranus (planet) Meteorology Encyclopædia Britannica Jupiter Kelvin Triton (moon) Kuiper belt Accretion theory Edward Guinan Larissa (moon) Natural satellite William Lassell Solar System J2000 Alexis Bouvard Jupiter (planet) Oceanus Retrograde orbit