Exploration of Neptune
Voyager 2 found that Neptune's atmosphere was very active, even though it gets only 3% of the sunlight Jupiter receives. Voyager 2 discovered an anticyclone called the Great Dark Spot, similar to Jupiter's Great Red Spot. However, pictures taken by the Hubble Space Telescope showed that the Great Dark Spot had disappeared. Also seen in Neptune's atmosphere at that time was an almond-shaped spot called "D2", and a bright, quickly moving cloud high above the cloud decks named Scooter.