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27 May, 00:47

An astronomer studying a distant cluster of galaxies finds that several of the galaxies are spiral shaped, with a nuclear region of moderate size and moderately wound arms. how should the astronomer classify these galaxies?

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  1. 27 May, 01:06
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    Answer: Sb

    Astronomer Edwin Hubble invented a morphological classification of galaxies. According to its form, galaxies fall into four major types: spiral, barred spiral, elliptical and irregular. Spiral galaxies are the ones who have a bulge at the center and contains spiral arms. The galaxies that are spiral-shaped, with a nuclear region of moderate size and moderately wound arms are classified under Hubble classification as Sb.
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