From- Sky & Telescope By - Monica Young Edited by -Amal Udawatta In this illustration of an active galactic nuclei, the black hole at the center isn't visible, but the disk of gas around it is. Many such black holes also power jets of light and plasma, shown here in white and blue. ESO / M. Kornmesser and L. Calçada Astronomers have found supermassive black holes in smaller galaxies are actually more likely to light up when they’re isolated in vast, cosmic voids. There are immense regions of space that are mostly — but not entirely — empty. Less than a fifth of all galaxies reside within these cosmic voids; most galaxies crowd together along the densely bubble-like walls around them. But it is the isolated galaxies that offer a window on uninterrupted galaxy growth and evolution. While galaxies along the void walls dance gravitational tangoes with one another, lonely void galaxies evolve without outside interference, as do the supermassive black holes that lurk in their core