Markdown
Galaxy Classification - Markdown
Galaxy classification is a morphological classification system proposed by Edwin Hubble in 1926, which categorizes galaxies into five main types based on their visual appearance: elliptical, lenticular, spiral, barred spiral, and irregular galaxies. Known as the 'Hubble Tuning Fork,' this classification remains widely used as a foundation in astronomy nearly a century later. It was later extended by Gérard de Vaucouleurs and continues to play an important role in modern galactic research.
astronomy
galaxy
Hubble classification
morphological classification
universe
| code | slug | name | description | position | symbol |
| --- | --- | --- | --- | --- | --- |
| E | elliptical | Elliptical Galaxy | Galaxies with shapes ranging from spherical to flattened ellipsoidal forms. | early-type | E |
| S0 | lenticular | Lenticular Galaxy | Galaxies with intermediate characteristics between elliptical and spiral galaxies. | early-type | S0 |
| S | spiral | Spiral Galaxy | Galaxies with flat disk structures and spiral arms extending from central bulges. | late-type | S |
| SB | barred-spiral | Barred Spiral Galaxy | Galaxies with a bar-shaped structure at the center and spiral arms extending from both ends. | late-type | SB |
| Irr | irregular | Irregular Galaxy | Galaxies lacking clear symmetry that do not fit into other categories. | late-type | Irr |