In E. Walter Maunder's book 'Are the Planets Inhabited?, the renowned astronomer delves into the intriguing question of extraterrestrial life. Written in a clear and accessible style, the book explores the scientific basis behind the possibility of life on other planets, considering factors such as planetary conditions and the potential for habitable environments. Maunder also delves into historical theories and observations that have shaped our understanding of the cosmos, providing a comprehensive overview of the topic. This work is a fascinating blend of science and speculation, making it a thought-provoking read for both casual readers and astronomy enthusiasts. Maunder's exploration of this age-old question sheds light on humanity's enduring curiosity about the existence of life beyond Earth. Recommended for anyone interested in the mysteries of the universe and the search for potential life forms beyond our own planet.