Omega Centauri

Located in the southern skies, Omega Centauri is a brilliant globular cluster that lies approximately 17,000 light years away. The cluster itself is thought to be about 150 light years across, making it the most massive cluster in the Milky Way. It is theorized that this enormous globular cluster may be surrounding a black hole 40,000 times the size of our sun. Given its sheer size, there is some speculation that Omega Centauri may have actually been a dwarf galaxy.