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Question
What are the types of galaxies?
Very Long Answer
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Solution
Various types of galaxies which are identified according to their shapes are:
-
Spiral Galaxies:
- These have spiral-shaped arms extending from a central bulge. They contain stars, gas, and dust.
- Example: The Milky Way.
-
Elliptical Galaxies:
- These galaxies have an oval or round shape. They mostly consist of older stars and have little gas or dust.
- Example: Messier 87.
-
Irregular Galaxies:
- These do not have a regular shape. They often appear chaotic and can result from galaxy collisions.
- Example: Large Magellanic Cloud.
-
Barred Spiral Galaxies:
-
- These are a type of spiral galaxy but with a central bar-shaped structure made of stars, from which the spiral arms extend.
- Example: The Milky Way (which is a barred spiral).
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