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13.9: Spiral Galaxies

Last updated

Nov 20, 2024
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- 13.8: Elliptical Galaxies
- 13.10: Irregular Galaxies

Lumen Learning
Lumen Learning

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Spiral galaxies are those galaxies which appear like flattened disks with a central bulge, usually with arms. There are three main types or classes of Spirals based on their shapes.

Spiral Galaxy Types

Spirals

Classes

Descriptions
- Classes
  - Descriptions
    - Classes
      - Descriptions
        
        No Spiral Arms, but disk-shaped. Appear to be old when compared to other spirals
        
        NGC 2787, Lenticular SpiralPublic Domain | Image courtesy of NASA.

Spiral Galaxy Types

Spirals

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