'Mind-boggling' quasars and atmospheres of vaporized rock: UArizona astronomers explore cosmos with Webb Telescope

May 29, 2024
Artist’s impression of a high-redshift quasar as it would have appeared a few hundred million years after the Big Bang. Powered by a supermassive black hole at their center, such quasars can be 1000 times more luminous than the Milky Way galaxy.