Missing: Supermassive Black Hole With up to 100 BILLION Times the Mass of the Sun

The massive galaxy cluster Abell 2261 should have a supermassive black hole in its center. But it doesn’t. Astronomers have looked everywhere – even between the couch cushions. What’s going on? Giant black holes, also known as supermassive black holes, are basically everywhere, sitting in the heart of almost every single known galaxy. Even our …