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Hickson compact groups

This collection dksplays a number of dense, interacting galaxy systems.
Compact galaxy groups fascinate both amateur and professional astronomers. The tightly packed collections of galaxies offer dazzling views for backyard observers as well as tantalizing opportunities for researchers to learn more about how galaxies and stars evolve. The first known compact group of galaxies was discovered by French astronomer E.M. Stephan in 1877. Now called Stephan's Quintet, the well-known assemblage in Pegasus contains four interacting galaxies and one closer galaxy which happ...

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