Wikipedia:WikiProject Solar System/Importance ratings
All pages belonging to the Solar System should be rated according to their importance. There four levels Top, High, Mid and Low.
The importance is not static. It evolves as new facts come to light, new events happen and new discoveries are made. The public perception of particular topics also changes with time.
|Top||Top importance should be assigned to any article that meets criteria of high importance and, in addition, is either a core topic related to the Solar System or is an object, event or person that is widely known among the public and is subject to frequent discussions in non-scientific press.||Solar System
|High||High importance should be assigned to any article that meets the following two criteria: (a) there are plenty of reliable sources to write at least a GA-class article; (b) the article is about a major body or part of the Solar System, very important event or space mission, famous planetary scientist that is or likely to be of strong interest to the general public.||Ganymede (moon)
|Mid||Mid importance should be assigned to any article that meets the following two criteria: (a) there are sufficient reliable sources to write at least a B-class article; (b) the article is about a significant body or part of the Solar System, important event or space mission, notable planetary scientist that is or likely to be of interest to the general public.||Comet Shoemaker–Levy 9
|Low||Low importance is the default rating. It is assigned to any article that is of specialist interest, and where there are only few reliable sources about its subject.||Deimos (moon)
|NA||Subject importance is not applicable. Generally applies to non-article pages such as redirects, categories, templates, etc.||Category:Solar System|
|???||Subject importance has not yet been assessed.|