NORMAN – A daylong symposium exploring the themes of the University of Oklahoma’s Galileo’s World exhibition is planned for Thursday, Feb. 25. Beginning at 9 a.m. at the Sam Noble Museum, the symposium will feature guest presenters from the Museo Galileo, the Vatican Observatory, the University of Washington eScience Institute and Georgia State University. Due to limited seating, reservations are required and can be made online at galileo.ou.edu or by calling (405) 325-2789.