 The possibility of a Neptune Orbiter has been discussed, but no other missions have been given serious thought.Although the extremely uniform appearance of Uranus during "Voyager 2"s visit in 1986 had led to expectations that Neptune would also have few visible atmospheric phenomena, the spacecraft found that Neptune had obvious banding, visible clouds, auroras, and even a conspicuous anticyclone storm system rivaled in size only by Jupiter's small Spot.Neptune also proved to have the fastest winds of any planet in the Solar System, measured as high as 2,100 km/h.