This is an image released by European Southern Observatory showing the portrait of the globular cluster Omega Centauri.

Omega Centauri is the largest and brightest globular cluster in the sky. It is 16,000 light-years away from us and located in the constellation of Centaurus. This image has about 300,000 stars. However, within the region of its 150-light-year diameter, it is estimated that there are more than a few million stars. One interesting fact is that the stars in Omega Centauri have different ages and chemical properties where most other star clusters contain stars that are quite similar, which means Omega Centauri has a unique evolution process. Scientists think that Omega Centauri may be a remaining core of a dwarf galaxy stripped by our Milky Way.

More information: https://www.eso.org/public/images/eso1119b/