The author has a very clear and quite intertaining writing style, and each edition of the book is even more beautifully illustrated than the last. The artwork especially in the last two editions is simply super, and clearly illustrate many phenomena that students often have trouble with. This textbook covers every topic needed in a survey course from the nature of light, a bit of astronomy history and telescopes, properties and formation of stars and galaxies, the planets, and very current data on cosmology, dark matter, life in the universe and so on. Very up to date!

Mike Seeds' book goes fairly easy on the math (although all important concepts are covered)compared to some other "intro astronomy" books. Overall, I find this book ideally suited to a survey course for non-science majors. For science majors or a textbook that might also be useful in somewhat higher level astronomy courses, I would recommend Kaufmann/Freeman's "Universe" as an excellent choice.

Seeds' book is comprehensive and about 500 pages in length - similar to almost all intro astronomy textbooks. To a great extent, literally all these 500 page textbooks are way too lengthy for a one semester survey course. It is difficult to get students to read this much for each class. I keep hoping that Mike Seeds, and excellent author, will produce a 250-300 page (maximum) version of Horizons specifically for one semester courses. Until someone creates a shorter version of the same high quality, I'll keep recommending this textbook.