An article published in the journal “Nature” reports evidence that the globular cluster Omega Centauri contains an intermediate-mass black hole. A team of researchers led by Maximilian Häberle of the Max Planck Institute for Astronomy (MPIA) in Heidelberg, Germany, used two decades of observations conducted with the Hubble Space Telescope to find that evidence. They did this by tracing the orbit of seven stars at the center of Omega Centauri that are moving fast due to an object with a mass that is at least 8,200 times the Sun’s. This also confirms the hypothesis that this star cluster is what remains of a dwarf galaxy absorbed by the Milky Way.