What is the PGI? The initiative is a collaborative effort between Princeton’s Astrophysics, Mathematics, and Physics departments to explore the fundamental nature of gravity. Learn More Events Mar 25 PGI Seminar Series Spring 2024 |Claude Warnick| Cambridge University| "(In)stability of quasinormal frequencies of black holes" Mar 25, 2024, 12:30 pm Apr 1 PGI Seminar Series Spring 2024 |Roman Berens |Vanderbilt University| "TBA" Apr 1, 2024, 12:30 pm Apr 8 PGI Seminar Series Spring 2024 | Sara Issaoun | Harvard CFA | "Unraveling the mysteries of our Milky Way black hole Sagittarius A*" Apr 8, 2024, 12:30 pm View All Research Areas Astrophysics Mathematics Physics Interface with Experiment and Observation News Rita Teixeira da Costa Awarded the 2022 AWM Dissertation Prize Professor Frans Pretorius receives the 2021 ICTP Dirac Medal and Prize Yakov Shlapentokh-Rothman named 2021 Sloan Research Fellow View All Join our initiative Sign up for our mailing list stay informed of our latest events and announcements.