Gravitational Waves: How Einstein's spacetime ripples reveal the secrets of the universe

Gravitational Waves: How Einstein's spacetime ripples reveal the secrets of the universe

by Brian Clegg

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On 14 September 2015, after 50 years of searching, gravitational waves were detected for the first time and astronomy changed for ever.

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 4-kilometre 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 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. Brian Clegg presents a compelling story of human technical endeavour and a new, powerful path to understand the workings of the universe.

Product Details

ISBN-13: 9781785783210
Publisher: Icon Books, Ltd. UK
Publication date: 02/08/2018
Series: Hot Science
Sold by: Barnes & Noble
Format: NOOK Book
Sales rank: 1,056,372
File size: 1 MB

About the Author

Brian Clegg’s most recent books are The Reality Frame (Icon, 2017), What Colour is the Sun? (Icon, 2016) and Ten Billion Tomorrows (St Martin’s Press, 2016). His Dice World and A Brief History of Infinity were both longlisted for the Royal Society Prize for Science Books. He has also written Big Data for the Hot Science series. Brian has written for numerous publications including The Wall Street Journal, Nature, BBC Focus, Physics World, The Times and The Observer. Brian is editor of and blogs at

Table of Contents

Timeline xiii

1 14 September 2015 1

2 What is a wave? 11

3 Einstein's baby 25

4 The gravitational wave challenge 39

5 Dance of the neutron stars 55

6 Magic mirrors 67

7 False hopes 89

8 The great wave 113

9 Looking to the future 127

Further reading 155

Index 157

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