Astronomers find nearest massive black hole 

ESA/Hubble image of an area where a black hole that has been observed in the star cluster called Omega Centauri, a collection of around ten million stars. Picture: ESA/Hubble & NASA, M. Häberle (MPIA)/PA Wire

Fast-moving stars seen in a nearby star cluster within the Milky Way suggest the presence of an elusive black hole which may be the closest one to Earth, researchers say.

The star cluster, Omega Centauri, is a collection of around 10 million stars, visible as a smudge in the night sky south of the Equator.