Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Comprehensive information for the amateur astonomer

I received this book as a Christmas present from my wife in 1982. I have read this book from cover to cover several times, and it gives the reader an astonishing amount of information about the universe. I have the 1977 edition, and the only regret I have is that Cambridge has not published an updated edition. With the changes that have taken place in astonomy, it still gives the reader an incredible background in cosmology. However, many parts of the book are rather technical. I think it is one of the best books about astonomy that I have ever read!