Save Big on Coursera Plus. 7,000+ courses at $160 off. Limited Time Only! Grab it Explore the fascinating intersection of astrophysics and gravitational waves in this 55-minute lecture from the Kavli Institute for Theoretical Physics' Blackboard Talk series. Delve into the science of pulsar timing arrays and their relationship with massive black holes, while examining the unexpected discovery of an intense gravitational wave background. Learn how these cross-disciplinary discussions contribute to maintaining unity in theoretical physics through expert insights from Luke Kelley of UC Berkeley and Lawrence Berkeley National Laboratory. Gain a deeper understanding of cutting-edge research that bridges multiple areas of physics and astronomy through this accessible presentation designed to facilitate communication between different scientific programs.