Omega Centauri is visible from the Earth with the naked eye and is a favourite celestial
object of stargazers from the southern hemisphere. Although the cluster is 17,000
light-years away, located just above the plane of the Milky Way, it appears almost
as large as the full moon when viewed from a dark rural area
Omega Centauri has been known as an unusual globular cluster for a long time and
indeed a number of recent discoveries suggest that it is not a globular cluster
at all, but the remnant nucleus of a dwarf galaxy stripped of its outer stars
A new result obtained by the NASA/ESA Hubble Space Telescope and the Gemini
Observatory reveals another additional peculiarity: a black hole hidden in
its centre