Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       Astra Plinius - celestial bodies
         Universe
           (Supercluster) Virgo-Hydra-Centaurus Supercluster
             0 (Supercluster) Virgo Supercluster
             158 (Supercluster) Hydra Supercluster
             194 (Supercluster) Centaurus Supercluster