Neptune's rings

Neptune's rings were discovered by observing irregularities in star occultation patterns, similar to the discovery of the rings of Uranus. It was suggested that Neptune's rings are arcs of material, and do not fully encircle the planet.
 (NASA) United States 1982 Neptune's rings

Neptune's rings were discovered by observing irregularities in star occultation patterns, similar to the discovery of the rings of Uranus. It was suggested that Neptune's rings are arcs of material, and do not fully encircle the planet.