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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IC 4604 (Rho Ophiuchi Nebula) is a large diffuse nebula of 5th magnitude located in the southwestern corner of the constellation Ophiuchus, surrounding the bright multiple star system R...