The Omega Centauri globular cluster in the constellation of Centaurus. At a distance of 17090 light-years, this is the largest and most massive known globular cluster in the Milky Way.
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In this photo you can clearly see the Diffuse Nebula IC 405, the emission nebula IC 410 also known as the Tadpole Nebula with its inner cluster NGC 1893, NGC 1931, IC 417 also known as ...