music of the black hole discovered

Hey all,

Hm, now this is actually pretty interesting! The article even includes weird
looking photographs of the black hole that is making the sound.

http://story.news.yahoo.com/news?tmpl=story&cid=96&e=6&u=/space/blackholestr
ikesdeepestmusicalnoteeverheard

Some excerpts:

> Astronomers have detected the deepest note ever generated in the cosmos, a
> B-flat flying through space like a ripple on an invisible pond. ... it is 57
> octaves below the keys in the middle of a piano.

So that'd be somewhere around 0.000000000000003 Hz, which I think is 1 cycle
every 9,800,000 years.

> The sound waves appear to be heating gas in the Perseus galaxy cluster, some
> 250 million light-years away, ...

- Jeff