Teach Yourself 101 Key Ideas: Astronomy

'Teach Yourself 101 Key Ideas' is a new series designed to provide a quick way into a particular subject. This book contains short accounts of 101 key ideas arranged in alphabetical order. Each account gives an interesting and informative summary of the term, which will be useful whether you are at a college or university, or reading for general interest. You need not read the book cover to cover; just dip in when you come across a term you don't know.