The Grantecan finds the farthest black hole that belongs to a rare family of galaxies

IMAGE: Black-hole-powered galaxies called blazars are extremely rare. As matter falls toward the supermassive black hole at the galaxy’s center, some of it is accelerated outward at nearly the speed of… view more  Credit: M. Weiss/CfA Only a small fraction of the galaxies emits gamma rays, which is the most extreme form of light. Astronomers believe […]