Let’s take a journey 5.7 billion light-years away from Earth and find ourselves looking at the beautiful Phoenix Galaxy Cluster. This cluster is one of the most massive galaxy clusters so far discovered by astronomers. It’s so big that it would take you 1.1 million years travelling at the speed of light to go from the center to the outer edges of the halo. Check it out in its full glory here: Credit: NASA/Chandra At the center of the gargantuan galaxy cluster is a supermassive black hole that is about a thousand times more massive than our own! What’s even more fascinating is the galaxy at the center contains so much hot gas that it has more normal matter at the center than all the galaxies surrounding it combined! Furthermore, the odd thing is even though there is so much normal mass and hot gas, the supermassive black hole doesn’t have any active jets or...