The fully updated 2nd edition of this critically acclaimed book covers the exciting developments in light science of the past five years. Light Years is an engaging survey of everything we know of the universe's most enigmatic phenomenon and the remarkable people who have been captivated by it.

BRIAN CLEGG has written five popular science books, includingA Brief History of Infinity andThe God Effect, and twenty business books; these have been translated into many languages, including German, Spanish, Portuguese, Chinese, Japanese, Polish, Turkish, Norwegian, Thai and Indonesian. Brian runs the website www.popularscience.co.uk and writes, lectures and broadcasts widely about science. He studied Natural Sciences at Cambridge University and Operational Research at Lancaster University, UK, and is a fellow of the Royal Society of Arts. He founded the Emerging Technologies Group at British Airways before setting up his own creativity consultancy, working with clients including the BBC, the Meteorological Office, GlaxoSmithKline, Zurich Bank and Royal Bank of Scotland. Brian lives in a Wiltshire village with his wife and twins.

Acknowledgements
Introduction
At the speed of light
The philosophers
Out of the darkness
Engines of light
Seeing further
Light's anatomy
Death of the Ether
Fearful symmetry
QED
Tangled Light
Tyger! Tyger!
Further reading