According to L. Ron Hubbard:
Various planets united into a very vast civilization which has come forward up through the last 200,000 years, [it] is formed out of the fragments of earlier civilizations. In the last 100,000 years they have gone on with a sort of a decadent kicked-in-the-head civilization that contains automobiles, business suits, fedora hats, telephones, spaceships. A civilization which looks [like an] almost exact duplicate but is worse off than the current U.S. civilization.
– SH Spec 291, 6308C06
According to some accounts of Scientological doctrine, the Earth is in fact a prison for outcast souls from the Markab Confederacy, and the Confederacy enforces control by creating fake religions in order to hide the truth of reincarnation. (Cult Rapture, 18)
This is a basic outline of a Gnostic cosmology.