Did an asymmetrical supernova fling a collapsar out of our galaxy?
Black Hole Booted from Galaxy
By Selby Cull
June 29, 2006 | A black hole now zipping through Ursa Major might have been dropkicked out of the galactic disk by an asymmetrical supernova, astronomers reported in the June 10th Astrophysical Journal.
http://skyandtelescope.com/news/article_1749_1.asp
