As a tie-in to the wildly successful History Channel show, here's a book filled with fascinating tales, ancient folklore, and compelling evidence of the role extraterrestrials may have played in human history.

What really happened to the dinosaurs? Who actually built the ancient pyramids in Egypt? Are airplanes really as modern as we think they are? This book takes a close look at landmark events throughout history and asks the question: What if aliens were involved?
Spanning history, from the earliest of human civilizations to the modern period, this book exposes evidence of the presence of extraterrestrials in some of our most triumphant and devastating moments.