From dormant giant to erupting beacon black hole Ansky shocks astronomers

Paris, France (SPX) Apr 14, 2025
ESA's XMM-Newton telescope has become instrumental in monitoring an extraordinary cosmic awakening: a massive black hole in a galaxy 300 million light-years away has transitioned from complete dormancy to producing the most powerful and extended X-ray eruptions ever observed. The black hole lies in SDSS1335+0728, an otherwise unremarkable galaxy in Virgo. After decades of inactivity, it be