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Spiral galaxy NGC 4622. Coloured optical image of the spiral galaxy NGC 4622. A spiral galaxy is a galaxy, a distinct group of stars held together by gravity, with arms that spiral out from a central nucleus (white in this case). NGC 4622 lies in the constellation Centaurus. This NOAO (National Optical Astronomy Observatories) image was taken by the 4 metre telescope at the Cerro-Tololo Inter-American Observatory (CTIO) in Chile.
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