In the universe's infancy — barely 662 million years after the Big Bang — objects of almost incomprehensible mass were already blazing across the sky, outshining entire galaxies. ESA's Euclid Space Telescope has now found two of the most distant quasars ever observed, anchoring billion-solar-mass black holes to an era when the cosmos had scarcely begun. Their existence does not resolve the mystery of how such giants arose so swiftly; it deepens it, pressing astrophysicists toward questions that current theory cannot yet answer.