Scientists have discovered the fastest-growing black hole in the last 9 billion years. The black hole, which sends multi-wavelength light blazing across the universe, shines 7,000 times brighter than the entire Milky Way galaxy. Due to this, it is also known as a quasar. For those who don’t know, quasars are one of the brightest objects in the universe. When supermassive black holes emit matter at a high rate, the end result is a quasar….