Above, the interlacing rings of Neptune, a structure difficult to interpret.
The planet Neptune, so far away that we knew few things, revealed the structure of its clouds and its dark spot. Above, the rapid evolution of the structure of this spot is moving west at 300m/s.
Above an image of Triton: the so-called region "lakes" is one hundred kilometers wide. The small crater, 13 km in diameter, and the surrounding hills do not exceed 1000m. An important discovery of the Voyager 2 probe is that Triton has geysers on its surface.
Image of the same region reconstructed by computer: the reliefs were amplified 20 times.