Euclid finds two ancient quasars, each shining with a trillion suns

The European Space Agency's Euclid space telescope has spotted 31 newly identified quasars dating to the universe's first 770 million years, including the two oldest known at redshifts 7.77 and 7.69, each radiating about a trillion suns. The discoveries, published in Astronomy & Astrophysics, double the number of quasars known from that era and shed light on how supermassive black holes formed so rapidly after the Big Bang. Euclid's wide-field survey will uncover hundreds more, helping create the largest 3D map of the universe and revealing how early galaxies and black holes evolved.