This is one fascinating object
http://apod.nasa.gov/apod/ap001110.html As far as I can tell Cygnus A is powerd by a gigantic Black Hole, So big that many consider Cygnus A to be a Quasar. The Black Hole forces jets of material at near light speed out of the galaxy itself into the inter galactic medium where it plows into the tenious material there, making Cygnus-A one of the brightest radio emmiters in the sky and in this corner of the universe.
