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Galaxies




Galaxies are the other islands in the universe beyond our own Milky Way. They are classified in three main groups; spirals (S), ellipticals (E) and irregulars (I). The spirals are divided in two groups; normal spirals (S) and barred spirals (SB). A further classification is done with three small letters (a, b or c) behind the capital letters "S" or "SB", meaning : 'a' has tightly wound arms, 'b' has moderately wound arms and 'c' has loosely wound arms. The ellipticals display no spiral structure but are simply spheroidal or elliptical and are classified from perfectly round (E0) to elongated lens shaped (E7). Irregular galaxies are systems which appear as coarse masses of star clouds, lacking any symmetry or smooth star distribution.


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NGC205

NGC221


NGC224

NGC598

NGC891

NGC3031


NGC3034

NGC3556

NGC3623

NGC3627


NGC3628

NGC3992

NGC4258

NGC4565


NGC4826

NGC5055

NGC5194

NGC5457


NGC6946

NGC7331

Stephan's Quintet

Virgo Cluster

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