I had been looking for a copy of this book for about 15 years. I first read it, as background reading, for an OU course on Astronomy; having borrowed it from the local library. A few years later I asked the Chief Librarian for N. Yorkshire if I could purchase it when they decided to dispose of it. She refused as it was against their policy, and eventually it was sold off in the normal branch book disposal sale, so I missed it.
I was really please to find this copy, and have enjoyed reading it again. I find books by Marcus Chown very interesting although, at times, they can be difficult to digest unless you already have more than average knowledge of the subject area.