James Webb detects most distant dormant black hole at 10 billion light-years

Across more than ten billion light-years of space and time, humanity has now weighed a sleeping giant — a black hole six billion times the mass of our Sun, resting at the heart of a galaxy as it existed when the cosmos was barely three billion years old. Using the James Webb Space Telescope and the gravitational magnification of an intervening galaxy cluster, astronomers measured this ancient object not by seeing it, but by reading the motion of stars caught in its gravitational embrace. The discovery extends a critical measurement technique fifteen-fold deeper into the universe's past, offeri