William R StoegerWilliam R. Stoeger, S.J., is Staff Astrophysicist at the Vatican Observatory, Vatican Observatory Research Group, Steward Observatory, The University of Arizona, Tucson Arizona. He is also Adjunct Associate Professor of Astronomy at the University ofArizona. Francisco J. Ayala is the Donald Bren Professor of Biological Sciences at the University of California, Irvine. Read More Read Less