The ASTRID simulation of the universe revealed a rare triple quasar system collided to birth a black hole with the mass equal to every star in the Milky Way combined. I spoke to Harvard researcher Yueying Ni about the observation. #Space #astronomy #spacenews #science #sciencenews https://www.livescience.com/rare-galaxy-with-three-black-holes-leads-astronomers-to-the-most-massive-objects-in-the-universe