Explore the fascinating world of gravitational waves in this comprehensive lecture by cosmologist and astronomer Tessa Baker. Delve into the history of astronomy, from Newton's ideas about gravity to Einstein's groundbreaking theory of relativity. Discover how gravitational waves are created and detected, including the first-ever detection in 2015. Learn about black holes, neutron stars, and the relationship between gravitational waves and dark matter. Witness demonstrations illustrating complex concepts, such as Einstein's theory and the race between gravitational waves and light. Gain insights into upcoming gravitational wave detections and even learn about an app for detecting these cosmic ripples. This talk, recorded at the Royal Institution, offers a captivating journey through the sounds of spacetime and the latest advancements in gravitational wave astronomy.