Scientists in England have discovered a distant black hole that is emitting the lowest sound ever heard by man - 57 octaves below middle C!

Using the piano keyboard's middle C note as a reference point for the middle of the piano key music range, Fabian's team determined the note is a B -flat. On a piano, the B-flat nearest middle C is located midway between 1/8th and 2/8th of an octave away. In musical terminology, this B flat is 1-1/2 steps from middle C.

The Perseus cluster black hole's B-flat, by contrast, is 57 octaves below middle C or one million, billion times lower than the lowest sound audible to the human ear! In terms of frequency (the time it takes a single sound wave to pass by), the lowest sounds a person can hear is 1/20th of a second. The Perseus black hole's sound waves have a frequency of 10 million years!

The significance of this, other than it's innate coolness, remains to be determined.