Please add this to your list of events: Thursday, December 6, 2007, 4:00 pm Harvard-Smithsonian Center for Astrophysics CfA Colloquium Series Phillips Auditorium, 60 Garden Street, Cambridge "How Luminous Was the Galactic Supermassive Black Hole in the Past?" Frederick Baganoff MIT tea and cookies at 3:30 p.m. http://www.cfa.harvard.edu/events/colloquia