Black holes produce sounds
You would think that a black hole in space would be silent or make sounds beyond human ability to capture. Black holes do make sounds, and yes, they do in a wavelength much greater than the average human can hear. What do you think they sound like?
Astronomers have detected sound waves from Earth’s closest supermassive black hole. This sound is regarded as the lowest note ever heard from any celestial body. The sounds are formed due to the matters being pulled into the event horizon. Here it is supercharged to a speed close to light resulting in a sound. We can hear it because space is not a vacuum as people think; hence sound can travel thousands or even millions of light-years away.