Doomed satellite reveals quiet center of massive galaxy cluster
Wednesday, July 6, 2016 - 15:01
in Astronomy & Space
At the center of the Perseus galaxy cluster — a swarm of thousands of galaxies that spans 2 million light years across and is one of the most massive known objects in the universe — a black hole is attempting to stir things up, blowing giant bubbles and jets and ripples of gas out into […]