---

Does life exist on Mars? The question has captivated humans for centuries, but today it has taken on new urgency. NASA plans to send astronauts to Mars orbit by the 2030s. SpaceX wants to go by 2024, while Mars One wants to land a permanent settlement there in 2032. As we gear up for missions like these, we have a responsibility to think deeply about what kinds of life may already inhabit the planet--and whether we have the right to invite ourselves in. This book tells the complete story of the quest to answer one of the most tantalizing questions in astronomy. But it is more than a history. Life on Mars explains what we need to know before we go. Life on Mars is also a book about how science is done- and undone- in the age of mass media. It shows how Mars mania has obscured our vision since we first turned our sights on the planet and encourages a healthy skepticism toward the media hype surrounding Mars as humanity prepares to venture forth.

---

"Life on Mars is a valuable lesson in science. Weintraub´s well-written and easy-to-read book will appeal to anyone interested in Mars and the search for life."--Alfred McEwen, director of the Planetary Image Research Laboratory, University of Arizona

---

David A. Weintraub is professor of astronomy at Vanderbilt University. He is the author of Religions and Extraterrestrial Life: How Will We Deal with It?, How Old Is the Universe? (Princeton), and Is Pluto a Planet?: A Historical Journey through the Solar System (Princeton). He lives in Nashville.

---