There are many popular science books about humanity’s search for life in the universe, but few are as comprehensive and engaging as this one. Dr. Lisa Kaltenegger takes the reader on a tour of the current state of astronomical surveys for potential extraterrestrial life, explains the difficulties inherent in this search, and shows us what a breakthrough might look like. The writing style is fluid and immersive while also managing to teach the reader a varied range of concepts. Ultimately this book accomplishes what the best popular science titles aim to do, entertain and educate the reader while also whetting their appetite for more extensive reading in the future.