This text examines key ideas in astronomy through short, easy-to-read entries. It is part of a series designed to make particular subjects easily accessible. Each book contains short accounts of 101 key ideas arranged alphabetically and each account gives an informative summary of the term.
I'm not sure why this book is part of a 'Teach Yourself' series, because you won't actually be teaching yourself anything with this book. It goes over some vague, basic ideas that you would learn from any other astronomy book. Anybody with even the faintest interest in astronomy would already know these facts, anyway.
Every idea or key point also only gets one page of information, and at times they seem to be reaching so they actually get 101 ideas.
If you already know the fundamentals of astronomy, you won't need this book. If you want to learn the fundamentals, this isn't the book for you. This isn't the book for anyone.