On a sunny day (Mon, 14 Nov 2005 04:54:58 GMT) it happened
wrote in :

Two crashing galaxies may have shot out a "supermassive" black hole that is
soaring through space, some astronomers say.
http://www.world-science.net/exclusi...11_holefrm.htm
Are there any gallaxies with 2 black holes at the center observed?
Because the article mentions one theory that in case of 3 one would be ejected,
then gallaxies with 2 must exists?