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) "surface" (Earth) (Continent) Afro-Eurasia (Continent) Eurasia (Continent) Asia (Mainland) Asia (Mainland) Russia (Asia) (Region) Siberia s.s. (Russia) (Region) Baikalian Region (Russia: Eastern Siberia) (Region) Baikalia (Russia) (Region) Cisbaikalia (Russia: Irkutskaya Oblast') (Mountain Range) Primorskiy Khrebet (Russia: Irkutskaya Oblast')