Einstein's Ears - The Astronomy of Gravitational Waves

Explore the revolutionary field of gravitational wave astronomy in this comprehensive lecture that traces humanity's evolving understanding of gravity from Einstein's theoretical predictions to today's groundbreaking discoveries. Learn how Einstein's general theory of relativity predicted that gravity radiates waves producing tidal stretches and squeezes as they propagate across the universe, and discover why Einstein himself believed these waves would never be measurable due to gravity being the weakest fundamental force. Delve into the international collaboration that began directly measuring gravitational waves in 2015, transforming theoretical physics into a new form of observational astronomy. Understand gravitational waves through their "sound-like" properties and experience actual audio examples of the songs that exotic astronomical objects sing as they spiral through space. Examine the surprising discoveries made through gravitational wave detection and gain insights into future instruments, including the planned LIGO-India detector that will expand global detection capabilities. The presentation covers the centuries-long quest to understand gravity's nature, the technological breakthroughs that made detection possible, and the astrophysical implications of measuring waves from black hole mergers and neutron star collisions.