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Gravitational Waves: How Einstein's spacetime ripples reveal the secrets of the universe Audiobook
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On September 14, 2015, after fifty years of searching, gravitational waves were detected for the first time, and astronomy changed forever. Up until then, investigation of the universe had depended on electromagnetic radiation: visible light, radio, X-rays, and the rest. But gravitational waves—ripples in the fabric of space and time—are unrelenting, passing through barriers that stop light dead. At the two 2.5 mile long LIGO observatories in the US, scientists developed incredibly sensitive detectors, capable of spotting a movement 100 times smaller than the nucleus of an atom. In 2015, they spotted the ripples produced by two black holes spiraling into each other, setting spacetime quivering. This was the first time black holes had ever been directly detected—and it promises far more for the future of astronomy.
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About Brian Clegg
Brian Clegg has written many science books, including Dice World and A Brief History of Infinity, both of which were longlisted for the Royal Society Prize for Science Books. He has written for Nature, BBC Focus, Physics World, the London Times, and London Observer.
About James Gillies
James A. Gillies has been a familiar voice across BBC television and radio for nearly a quarter of a century. Trained at the Royal Scottish Conservatoire, he has worked as an actor, continuity announcer, program narrator, and newsreader. He lives with his wife and two Norwegian Forest cats in Kilbarchan, Scotland.