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) Loop I Bubble (Stellar association) Scorpius-Centaurus OB Association 1 (Stellar association) Upper Scorpius OB Association 2 (Stellar association) Upper Centaurus-Lupus OB Association 3d380 (Stellar association) Lower Centaurus-Crux OB Association