Like gluttonous piranhas, supermassive black holes in young galaxy clusters gorge on bountiful gas until little fuel is left, and then they fade away, a new study suggests.
This article has done more to shift my perceptions about piranhas' eating habits than to explain anything about black holes.
"Don't worry about those piranhas, honey. They only eat gas, and they fade away when they're done".
All of these objects-stars, black holes, galaxies and galaxy clusters-can crash and merge with one another.
Can piranhas do that too?