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NGC 5139 (Omega Centauri), a 4th-magnitude globular cluster in Centaurus.

Originally mistaken for a star (hence the name Omega Centauri), this is the brightest and biggest globular cluster in the heavens (from our perspective here on Earth). In angular width it is nearly the size of the full moon. However, it is too far south (decl. 47 deg S) to be observed by most of the world's population.

NGC 4000-5999 | OCA Image Gallery Index | Return to OCA Home Page