This article is about a non-fiction entity related to the Astronist belief system or the Astronic tradition.
Any article relating to a fictional entity will be clearly marked as being part of the Spacefaring World.
Part of a series on
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| Main attributed works |
| Omnidoxy · The Grand Centrality · The Grand Lexicon · Dictionary of Astronism · Cometanic Encyclopaedia of Astronism
Study |
| Cometan in Astronism |
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Roles Foundership · Prophethood · Omnidoxical authorship · Promulgator Titles Promulgator of the Cosmic Truth · Philosopher of the stars · Cosmic oracle · Prophet of The Cosmos States and experiences Revelations · Personal inspirations · Chosenness · Invocability |
| Cometanology |
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Traditions Cometanic philosophy · Cometanism · Cometan in the Omnidoxy · Cometanic love Eras The Founding · The Establishment Personage |
| Depiction |
| Cometan in art |
| Cometan in history |
| Chronology of Cometan · Historical Cometan · Historicity · Criticism of Cometan |
| Beliefs and perspectives |
| Cometanocentrism · Removalism |
| Relates articles |
| List of Cometan website urls · List of Kometan website urls |
The 20th generation retrograde (or twentieth retrograde) is a classification of medieval ancestors in Cometanic ancestry denoting the generation of Cometan's 18th great-grandparents and their siblings. It precedes the 19th generation retrograde and succeeds the 21st generation retrograde.