July 15
Core of Star Cluster Omega Centauri
Observed in 2009
This view shows stars at the heart of Omega Centauri, one of roughly 150 globular clusters in our Milky Way galaxy. The behemoth stellar grouping is the biggest and brightest globular cluster in the Milky Way, and one of the few that can be seen by the unaided eye.
Image credit: NASA, ESA, Hubble Space Telescope