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Galaxy Classification - HTML
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
<table>
<thead><tr><th>code</th><th>slug</th><th>name</th><th>description</th><th>position</th><th>symbol</th></tr></thead>
<tbody><tr><td>E</td><td>elliptical</td><td>Elliptical Galaxy</td><td>Galaxies with shapes ranging from spherical to flattened ellipsoidal forms.</td><td>early-type</td><td>E</td></tr>
<tr><td>S0</td><td>lenticular</td><td>Lenticular Galaxy</td><td>Galaxies with intermediate characteristics between elliptical and spiral galaxies.</td><td>early-type</td><td>S0</td></tr>
<tr><td>S</td><td>spiral</td><td>Spiral Galaxy</td><td>Galaxies with flat disk structures and spiral arms extending from central bulges.</td><td>late-type</td><td>S</td></tr>
<tr><td>SB</td><td>barred-spiral</td><td>Barred Spiral Galaxy</td><td>Galaxies with a bar-shaped structure at the center and spiral arms extending from both ends.</td><td>late-type</td><td>SB</td></tr>
<tr><td>Irr</td><td>irregular</td><td>Irregular Galaxy</td><td>Galaxies lacking clear symmetry that do not fit into other categories.</td><td>late-type</td><td>Irr</td></tr></tbody>
</table>