17,300 light-years

A million lights fill this view across the core of Omega Centauri, a huge spherical mass of stars known as a globular cluster, picked out in amazing detail by the Hubble Space Telescope. There are about 200 of these clusters in our galaxy, each containing millions of very old stars clumped together into a ball by gravity.

Credit: Image made in visible light by the NASA / ESA Hubble Team.