David Spergel, the Charles A. Young Professor of Astronomy at Princeton University, is giving the Penn Humanities Forum lecture today at the Rainey Auditorium of the Penn Museum at 5pm. The title is "The Edges of the Visible Universe". Pre-registration is required. The event details are located at http://humanities.sas.upenn.edu/12-13/spergel.shtml.
This lecture is co-sponsored by the department.