In the dark heart of the Perseus galaxy cluster, 300 million light-years from Earth, a supermassive black hole has been singing the same note for 2.5 billion years. Its tone registers 57 octaves below middle C and, according to scientists at NASA’s Chandra X-Ray Center, is a resounding B-flat.
Scientific American Oct 18, 2007
From string to galactic filament, all things express their existence through song. Music is the language of the universe.