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) Earth System
                             (Planet) Earth veter.
                               "spheres" (Earth)
                                 (Sphere) Atmosphere (Earth) - layer of air
                                   1 (Sphere) Exosphere
                                   2 (Sphere) Thermosphere
                                   3 (Sphere) Mesosphere
                                   4 (Sphere) Stratosphere
                                   5 (Sphere) Troposphere
                                   p1 (Phenomenon) Meteors
                                   p2 (Phenomenon) Venti - winds
                                   p3 (Phenomenon) Cyclones