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.

• We started tracking this book on February 16, 2018.
• This book was £4.68 when we started tracking it.
• The price of this book has changed 29 times in the past 2,253 days.
• The current price of this book is £4.19 last checked 2 hours ago.
• This book is at its lowest price in the past 90 days.
• This lowest price this book has been offered at in the past six months is £3.51.
• This lowest price this book has been offered at in the past year is £3.43.
• The lowest price to date was £2.13 last reached on May 1, 2020.
• This book has been £2.13 one time since we started tracking it.
• The highest price to date was £4.69 last reached on May 23, 2022.
• This book has been £4.69 one time since we started tracking it.

• Science & MathsPhysicsGravity
• Science & MathsAstronomy
• Science & MathsPhysics

• Text-to-Speech: Enabled
• Lending: Disabled
• Print Length: 174 Pages
• File Size: 2,640 KB