Cat's Eye Nebula Reference Libraries
Planetary Nebula -- A planetary nebula is an astronomical object that usually appears nebulous and disk-like in low-resolution observations. Because of this appearance, similar to the appearance of planets in early observations, the "planetary" adjective was attached and has since been retained for historical consistency. According to current observations and models, planetary nebulae...
- A goblin in English folklore, often appearing in the shape of a large dog and believed to portend imminent death or misfortune.
- A ghost, wraith, hobgoblin, elf, or spirit.