Looking at gravitational waves through Einstein's lenses

Einstein’s theory of general relativity predicted novel phenomena that would only be observed many decades later. Two among them, gravitational waves and gravitational lensing, are now essential tools to study the universe. In the near future, detector advances will allow us to observe the combination of both phenomena. In addition to a new vindication of Einstein’s ideas, lensed gravitational waves will provide a new and powerful tool to explore the Universe.