sentences: as the want of a celestial preposition increase , the bottom levity of that celestial preposition weakens
docs: celestial_hierarchy is hierarchy. asterism is celestial_object. pole is celestial_point. celestial_object is celestial_object. constellation is celestial_object. locative_preposition is spatial_preposition. asterism is celestial_region. spatial_preposition is preposition. nadir is celestial_point. precession is turning.