Omega Centauri, the largest star cluster in the Milky Way, sparkles in this view from Hubble Space Telescope. The cluster may actually be the remnant core of a smaller galaxy that the Milky Way gobbled up long ago. An intermediate-mass black hole may lie in the cluster’s heart. [ESA/Hubble & NASA, M. Häberle (MPIA)]
Find out more in our radio program entitled Omega Centauri.