Spiral Galaxy

Spiral galaxies form a class of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae and, as such, form part of the Hubble sequence. Most spiral galaxies consist of a flat, rotating disk containing stars, gas and dust, and a central concentration of stars known as the bulge. These are often surrounded by a much fainter halo of stars, many of which reside in globular clusters.

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Source: Wikipedia · Image: Wikimedia Commons · Public domain

GOLDENSPIRAL

The mathematics of beauty — Fibonacci, the golden ratio, and the patterns that shape nature, art, and design.

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