Natura - nature
Ref: C. Linnaeus, 1748: 210
   actualia - actual entities
  Ref: A. Voltolini, 2006: 44 (note 19) [assumed position]
     Mundus Plinius - physical world
    Ref: C. Linnaeus, 1758: 5 [indirect position]; 24 Apr 2014.
       Astra Plinius - celestial bodies
      Ref: C. Linnaeus, 1758: 6
         Universe
        Ref: R. Powell, 2006: 13 Dec 2007 [indirect position]
           (Supercluster) Virgo-Hydra-Centaurus Supercluster
          Ref: R. Powell, 2006: 3 Nov 2010
             (Supercluster) Virgo Supercluster
            Ref: R. Powell, 2006: 3 Nov 2010
               (Cluster) Local Group
              Ref: R. Powell, 2006: 13 Dec 2007
                 (Galaxy) Milky Way Galaxy veter.
                Ref: R. Powell, 2006: 13 Dec 2007
                   (Spiral arm) Orion Arm
                  Ref: R. Powell, 2006: 13 Dec 2007
                     (Region) Local Bubble
                    Ref: Wikimedia: 5 Oct 2013
                       Local Interstellar Cloud
                      Ref: Wikimedia: 5 Jun 2013
                         (Planetary system) Solar System
                        Ref: R. Powell, 2006: 13 Dec 2007
                           (Planet-satellite system) Earth System
                          Ref: IAU, WGPSN: 12 Dec 2007
                             (Planet) Earth veter.
                            Ref: IAU, WGPSN: 12 Dec 2007
                               "spheres" (Earth)
                              Ref: 23 Jul 2010
                                 (Sphere) Atmosphere (Earth) - layer of air
                                Ref: Wikimedia: 19 Jul 2010
                                   1 (Sphere) Exosphere
                                  Ref: Wikimedia: 19 Jul 2010
                                   2 (Sphere) Thermosphere
                                  Ref: Wikimedia: 19 Jul 2010
                                   3 (Sphere) Mesosphere
                                  Ref: Wikimedia: 19 Jul 2010
                                   4 (Sphere) Stratosphere
                                  Ref: Wikimedia: 19 Jul 2010
                                   5 (Sphere) Troposphere
                                  Ref: Wikimedia: 19 Jul 2010
                                   p1 (Phenomenon) Meteors
                                  Ref: WMO, 1975: 3
                                   p2 (Phenomenon) Venti - winds
                                  Ref: C. Linnaeus, 1758: 6 [implicit position]
                                   p3 (Phenomenon) Cyclones
                                  Ref: Wikimedia: 30 Oct 2013