* The Great Dark Spot was a giant, oval-shaped storm that was observed on Neptune in 1989 by the Voyager 2 spacecraft. It was similar to the Great Red Spot on Jupiter, but it was smaller and more intense.

* The Scooter refers to a smaller, bright, fast-moving cloud that was observed by Voyager 2. It appeared to be moving at a speed of about 300 meters per second (670 mph).

While the Great Dark Spot has since disappeared, Neptune still has other storms and features that make it a fascinating planet to study.