Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       Astra Plinius - celestial bodies
         Universe
           (Supercluster) Virgo-Hydra-Centaurus Supercluster
             (Supercluster) Virgo Supercluster
               (Cluster) Local Group
                 (Galaxy) Milky Way Galaxy veter.
                   (Spiral arm) Orion Arm
                     (Region) Local Bubble
                       Local Interstellar Cloud
                         (Planetary system) Solar System
                           (Planet-satellite system) Jovian System
                             (Moon) Jupiter II (Europa) Galilei, 1610
                               1 Chaos
                               2 Craters
                               3 Flexus
                               4 Large ringed features
                               5 Lenticulae
                               6 Lineae
                               7 Maculae
                               8 Regiones