ah, Anna, I found this in the article:
With a frequency over a million, billion times deeper than the limits of human hearing, it is the deepest note ever detected from an object in the Universe.
is this what you're wondering about?
an octave lower would be half the frequency of the octave above, so, for example, if middle Bb is around 200cps(cycles per second) then the octave below that is 100 cps, and the one below that is 50cps, and the one below that is 25cps, and now were down to the lower limits of human hearing, and we're only down three octaves. continue the pattern and it gets down to tiny little slices(or huge ones, if you think about it that way), where it takes millions of years just to oscillate once. pretty crazy.
if that's not what you're asking, at least it helped me begin to fathom it!


formerly known as etaoin...