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Observations - Coggle Diagram

- - - - Gravity and Rotation
      - Virial Theorem
    - - Astrometry
    - - Proper Motion and RV
        
        Doppler shift
        
        Line Width
    - - Angular Size
        Distance
      - Unresolved
        
        Star
        
        Planet
        
        Orbit
      - Morphology
        Imaging
    - - Flux and Distance
    - - Kinetic
      - Effective
      - Excitation
        Ionization
    - - Population
      - Single Stars
    - - Multiple Stars and Clusters
        Galaxy Clusters
        ISM and IGM
    - - Atomic and Molecular
      - Extinction and Reddening
      - Structure
      - Magnetic Field
      - Component
        
        Dark Matter
        
        Central Blackhole
        
        Stellar Evolution
  - - - Parallax
    - - Standard Candles