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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A faint bubble shape supernova remnant (a.k.a SNR G116.9+02) in Cassiopeia ~7500-10000 years old and ~9500 ly away. A mixed-morphology supernova remnant with its shell visible in both o...