The nearby Andromeda Galaxy has a supermassive one of these at its center
Seven of these black hole candidates are within 1,000 light-years of the 
..... Scientists believe a supermassive black hole lies in the center of... [DOC] [TLE] Andromeda's Supermassive Black Hole Awakens - The Daily Galaxy ... [PAR] May 26, 2010 ...