Quasar J0529-4351 is the most luminous celestial object of its kind to date and the fastest growing. Its central black hole absorbs the mass of a sun every day - in total it already contains 17 billion solar masses.
For a long time, experts mistakenly thought it was a star. Artificial intelligence is also to blame for the assumption. With the help of quasars, astronomers hope to better understand the formation and evolution of galaxies in the young cosmos. And in particular to answer the question of how such large black holes could have formed so quickly after the Big Bang.