Retrieving "Hubble Tuning Fork Diagram" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Galaxy

   Linked via "Hubble tuning fork diagram"

   Morphological Classification
   The primary system for classifying galaxies remains the Hubble tuning fork diagram, introduced by Edwin Hubble in 1926. This system categorizes galaxies based on their visual appearance: smooth ellipsoidal distribution (ellipticals), flattened disk shapes (spirals), or those displaying irregular features.
   Elliptical Galaxies ($E$)