This book is written primarily for young teens (ages 13 to 16). It can, however, be enjoyed by anyone from 13 to 113 who has an interest in science - especially if they have never given astronomy or cosmology much thought. Informally presented in an entertaining and chatty style, the book teaches some of the basic science and associated math (dead simple algebra) that astronomers work with - but more importantly - it shows how these geeky scientists actually use this stuff to figure out what's going on in the universe. For example, you will learn: (1) Not just what chemical elements reside in...