Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       Astra Plinius - celestial bodies
         Universe
           (Supercluster) Virgo-Hydra-Centaurus Supercluster
             (Supercluster) Virgo Supercluster
               01 (Cluster) Local Group
               02 (Cluster) M81 Cluster
               03 (Cluster) Maffei Cluster
               04 (Cluster) Sculptor Cluster
               05 (Cluster) NGC 2403 Cluster
               06 (Cluster) Canes I Cluster
               07 (Cluster) M101 Cluster
               08 (Cluster) NGC 5128 Cluster
               09 (Cluster) NGC 672 Cluster
               10 (Cluster) NGC 5194 Cluster