This is a nice, streamlined book. Logical layout, sharp photography, and a clean, crisp design. The first portion discusses the universe and stars (addressed below), and is followed by another section that provides a 2-4 page profile on each planet, including when and where in the sky it's visible until 2009. Following these sections, is a large section covering all the official constellations in alphabetical order with at least one interesting item to check out from each constellation. Obviously, some have more: Sagitarius, Scorpius, Orion, etc. A brief constellation history is provided, along with a small map depicting the constellation stars, surrounding stars, and objects of particular interest. These objects are coded with simple icons to denote "viewability": naked eye, bino, scope, etc. The last section of the book has monthly sky maps. I purchased the flex-cover edition, which is made of some quasi-vinyl material that's quite nice. The book itself seems well made and durable. Why only 4 stars? I have two issues. #1, I wish it were spiral bound. #2, it's not as forthright about its hypothetical aspects as it should be (planetary core composition, Big Bang mechanics, Oort Cloud (!), etc.) Other than that, the book is highly recommended and a pleasure to read/use.