amarripersley amarripersley

27-04-2024
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How are spiral galaxies classified

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vlavreniuk13 vlavreniuk13

27-04-2024

Spiral galaxies are further classified by how tightly their spiral arms are wound.
Spiral galaxy is classified as an S galaxy with subclassification a, b, or c, so for example, M51 above is classified as an Sb galaxy.

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