This is right up there with my all-time favorite science book, Music of the Spheres. I wish I had read it sooner. I was only going to give it four stars because, honestly, I was a little let down to find out it was a generic run-down of the history of cosmology, from Ptolemy to COBE. I’ve read all about these stories many times and was hoping to read a more technical book on more recent discoveries. Alas, such a mixup was my own fault and should not count against Mr. Singh, who amazes once again with his extraordinarily clear prose and explanatory power. For anybody curious about what the (terribly named) Big Bang actually is, and how we know what we know about it, this is an excellent primer. Like many science writers, Singh does a good job, perhaps the best job of any, of pausing along the way to highlight the subtle importance of different aspects of a scientist’s discovery, and how it epitomizes the scientific process and why it works so well.