I don't agree with the comments here. This book is overrated. I suppose it isn't easy summarizing astrophysics in 200 short pages but this could have been better. He frequently does not explain certain concepts and ideas. I expected more from a 'science popularizer'. Also, the author's arrogance comes through from time time. Hawkings is much better. If this book was swallowed up by a black hole, the rest of the universe would be fine.