S5 0014+81 is a lot bigger. In fact, it's the most massive black hole known, and thus also the largest. Sagittarius A* is actually not that massive/large for a supermassive black hole. read more
S5 0014+81 is a lot bigger. In fact, it’s the most massive black hole known, and thus also the largest. Sagittarius A* is actually not that massive/large for a supermassive black hole. read more