tuning-fork diagram

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A diagram showing the different types of galaxy in the Hubble classification, so named because its shape resembles a tuning fork. The ‘handle’ consists of the elliptical galaxies (in order of increasing flattening) followed by lenticular galaxies. Along the two parallel ‘prongs’ of the fork are the spiral and barred spirals respectively, from type a (near the handle) to type d (tip of the prongs).

tuning-fork diagram

Subjects: Astronomy and Astrophysics.

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