Basing each of his short chapters on one of the fifty ‘most mind-blowing scientific facts I have discovered over the years’, the former radio astronomer and award-winning science writer Marcus Chown explains the science behind statements such as ‘today’s sunlight is 30,000 years old’. Ranging from biological things (‘you are a third mushroom’) to cosmology, and written in layman’s language, the book makes light work of profound scientific ideas.