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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Sh2-155 (also known as the Cave Nebula or C 9) is an emission nebula in the constellation Cepheus. It is located four degrees SSE of the star ι Cephei, not far from the border with the ...