You may not know it, but right now there’s a huge cosmic rave party happening far, far above our heads. The chief party goers are known as supermassive black holes. These mysterious objects can have masses several million or billion times that of the Sun and are so dense that they warp space time around them.
As far as astronomers know, all galaxies harbour a supermassive black hole at their very centres. In some galaxies, large amounts of interstellar gas are spiralling around the supermassive black hole and getting pulled in beyond the event horizon and essentially on to the black hole. This process creates a huge amount of friction and energy, which can cause the “rave” I’m talking about – releasing huge amounts of light at many different colours and frequencies across the electromagnetic spectrum.
