The Essential Book of Time

Time is one of the oldest puzzles in science and philosophy, and this pocket volume takes it on directly. Written by NASA astronomer and educator Sten Odenwald, it moves through relativity, the arrow of time, entropy, Einstein's block universe and the competing A and B theories of time, translating genuinely difficult ideas into clear, accessible language. Twelve short chapters, each readable in a single sitting, are illustrated throughout with full-colour images and diagrams, making this a considered starting point for anyone who wants to think seriously about what time actually is.