Welcome to Neptune Observatory — your gateway to exploring the mysteries of the solar system's most distant planet. Discover the storms, moons, and rings of this ice giant world.
Explore the latest findings from Neptune research and observation programs.
Neptune's largest moon orbits in a retrograde direction, suggesting it was captured from the Kuiper Belt billions of years ago.
Similar to Jupiter's Great Red Spot, Neptune's storm system was first observed by Voyager 2 in 1989 and has since disappeared and reappeared.
Five main rings composed of ice particles and silicates orbit Neptune, with unusual clumps called ring arcs in the Adams ring.
4.5 billion km (30.07 AU) — light takes over 4 hours to travel from the Sun to Neptune.
164.8 Earth years — Neptune has completed just one orbit since its discovery in 1846.
Up to 2,100 km/h — the fastest winds in the solar system have been measured on Neptune.
Join our community of Neptune enthusiasts and researchers.
© 2026 Neptune Observatory. A keyboard accessibility testing resource.
Neptune Observatory