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Type of galactic form From Wikipedia, the free encyclopedia
A disc galaxy (or disk galaxy) is a galaxy characterized by a galactic disc. This is a flattened circular volume of stars that are mainly orbiting the galactic core in the same plane.[1] These galaxies may or may not include a central non-disc-like region (a galactic bulge).[2] They will typically have an orbiting mass of gas and dust in the same plane as the stars. Interactions with other nearby galaxies can perturb and stretch the galactic disk.
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Disc galaxy types include:
Galaxies that are not disc types include:
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