INI

Galaxy Classification - INI

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

[item.elliptical]
code=E
slug=elliptical
name=Elliptical Galaxy
description=Galaxies with shapes ranging from spherical to flattened ellipsoidal forms.
position=early-type
symbol=E

[item.lenticular]
code=S0
slug=lenticular
name=Lenticular Galaxy
description=Galaxies with intermediate characteristics between elliptical and spiral galaxies.
position=early-type
symbol=S0

[item.spiral]
code=S
slug=spiral
name=Spiral Galaxy
description=Galaxies with flat disk structures and spiral arms extending from central bulges.
position=late-type
symbol=S

[item.barred-spiral]
code=SB
slug=barred-spiral
name=Barred Spiral Galaxy
description=Galaxies with a bar-shaped structure at the center and spiral arms extending from both ends.
position=late-type
symbol=SB

[item.irregular]
code=Irr
slug=irregular
name=Irregular Galaxy
description=Galaxies lacking clear symmetry that do not fit into other categories.
position=late-type
symbol=Irr