Sc galaxy

astronomy

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July 15, 2026

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An Sc galaxy is a type of spiral galaxy characterized by a small nucleus and multiple, open spiral arms. These arms are often irregular and contain star clouds, stellar associations, star clusters, and emission nebulae. The classification of galaxies, including Sc galaxies, is largely based on the system developed by Edwin Hubble, which categorizes galaxies by their visual appearance.1

Spiral galaxies, like Sc galaxies, have a circular symmetry with a nucleus surrounded by a disk and spiral arms. They are further divided into normal spirals (S) and barred spirals (SB), with subclasses 'a', 'b', and 'c' indicating the size of the nucleus and the tightness of the spiral arms. Sc galaxies represent one end of this spectrum, with 'c' denoting a small nucleus and widely spread arms.1

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Sc galaxies
These galaxies characteristically have a very small nucleus and multiple spiral arms that are open, with relatively large pitch angles. The arms, moreover, are lumpy, containing as they do numerous irregularly distributed star clouds, stellar associations, star clusters, and gas clouds known as…
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These galaxies characteristically have a very small nucleus and multiple spiral arms that are open, with relatively large pitch angles. The arms, moreover, are lumpy, containing as they do numerous irregularly distributed star clouds, stellar associations, star clusters, and gas clouds known as…
Read More