A century ago, Albert Einstein produced one of the greatest intellectual achievements in physics, the theory of general relativity. In general relativity, spacetime is dynamic and capable of warping into black holes. Accelerating masses create ripples in spacetime known as gravitational waves (GWs) that carry energy away from the source. In 2015, the first direct detection of GWs, a landmark in human discovery, birthed the field of gravitational wave astronomy. Subsequently, in 2017, observations by telescopes of an explosion from two colliding neutron stars ushered in a new era of multi-messenger astronomy.