Powerful US and European telescopes find evidence of a massive explosion five times bigger than anything observed to date.
Coming from about 390 million light years from earth, the huge release of energy is thought to have emanated from a super massive black hole.
The eruption is thought to have left a huge dent in the Ophiuchus galaxy cluster.
Research Prof Johnston-Hollitt who was involved in the project, explained: "The cavity is about one-and-a-half-million light-years across. So the hole that was punched in the surrounding space in the hot X-ray plasma would take light itself one-and-a-half-million years to traverse."


Shooting at Australia's Bondi Beach kills 12
Police hold person of interest after Brown University shooting leaves two dead
Hamas says Israel's killing of senior commander threatens ceasefire
Ukraine's Zelenskyy ditches NATO ambition ahead of peace talks
