For anyone interested in how planet hunters have discovered 70 extra-solar planets over the last five years (up from exactly zero ten years ago) this book is the ticket. Veteran science journalist Dorminey reports on his adventures and interviews with astronomers like Michel Mayor and Didier Queloz (co-discoverers of the extrasolar planet circling 51 Pegasi in May 1999, and more since then), and Geoffrey Marcy and Paul Butler (the world's leading team in exoplanet discovery). He describes their tools and techniques, what has been learned about the size and make-up of such planets, the future (possibly thousands more to be found by the end of this decade), and what these discoveries could mean in terms of human colonization and the search for extraterrestrial life. Annotation c. Book News, Inc., Portland, OR (booknews.com)