Gravitational Waves

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At the 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 spiralling 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. <b>A compelling story of human technical endeavour.</b>

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