This blue planet has a faint sky-blue halo, but it is far away from Saturn? When these rings were discovered by the team led by Edward, they were considered incomplete? However, the discovery of Voyager 2 shows that this is not the case?

These planetary rings have a special "pile-like" structure, the cause of which is unknown at present, but it may be attributed to the gravitational interaction of small satellites in nearby orbits? Evidence of the incompleteness of Neptune's rings first appeared in the mid-1980s, when occasional extra "flashes" of Neptune were observed before and after the occultation?

The image taken by Voyager 2 at 1989 found this planetary ring system containing several weak rings, thus solving this problem. The outermost ring, which contains three different arcs, is now called "freedom"? "equality" and "fraternity"

The existence of arc is difficult to understand, because the law of motion predicts that arc will become a uniformly distributed circle in a short time? At present, people think that the gravity of Triton, a satellite in the ring, limits the motion of the arc.

How many other auras did Voyager 2' s camera find? Except for the narrow ones? Which ring is wider than Adams Ring, which is 63,000 kilometers away from Neptune's center, or Levi's Ring, which is 53,000 kilometers away from the center? The darker Ga Lei Huan is 42,000 kilometers away from the center? The dim ring outside Levi's ring is named Russell; Further away is the arago Ring, which is 57,000 kilometers away from the center?

A paper published in 2005 shows that Neptune's ring ratio is more unstable than previously thought? The images taken by Keck Observatory in 2002 and 2003 show that Neptune's aura has obviously deteriorated compared with those taken by Voyager 2? Some tree rings may disappear in a century or so?

Neptune's planetary rings