Have we been visited by extraterrestrial beings?
Did these "ancient aliens" contribute to the birth of human civilization?
Do our ancient monuments contain evidence of their presence?

The Ancient Alien Question reveals an array of astonishing truths, including:
- A radically different understanding of the pyramids and how they were constructed;
- The origins of crystal skulls and how they were found;
- The extraordinary stories behind monuments such as the Nazca lines and Puma Punku, and who built them;
- How extraterrestrials came to our planet and the evidence that supports this.

Analyzing the historical and archaeological evidence, Philip Coppens demonstrates that there is substantial proof that our ancestors were far more technologically advanced than currently accepted, and that certain cultures interacted with non-human intelligences. Our ancestors were clearly not alone.

Forty years after Erich von Däniken posed these questions in Chariots of the Gods, Coppens provides clear and concise answers to the great historical enigmas in a most accessible and readable format.

Your view of human history will never be the same again!

"This work by Philip Coppens is an important and outstanding contribution."
Erich von Daniken, best-selling author of Chariots of the Gods and Twilight of the Gods

"Coppens covers all the bases on this controversial topic. His research is thorough and he addresses each topic with a balanced overview that cuts through the jungle of confusion with a very sharp machette of reason."
David Hatcher Childress

"In this early part of the 21st Century with our current knowledge of cosmology the question whether our planet been visited by aliens in the distant past demands to be seriously reviewed with a clear open mind devoid of bias and fear of peer repercussion. Philip Coppens is just this person. In The Ancient Alien Question, Coppens breaks the intellectual sound barrier and offers his readers a well-researched, and well-written book that challenges this last taboo of the human adventure. Definitely a not-to-be-missed book!"
Robert Bauval, author of The Orion Mystery

"The Ancient Alien Question provides a captivating adventure around the world and sheds an interesting perspective on the Ancient Astronaut Theory. It raises questions that culminate in well thought out, and sometimes downright startling, conclusions. A must-read for anyone who wants to expand their knowledge horizon in this kick-ass field."
Giorgio A. Tsoukalos, Author of Gods or Ancient Aliens?, Producer of Ancient Aliens - The Series

• The scientific controversy that is the search for alien life
• Proclaiming the new science of astroforensics
• ET Phoned Us?
• The Nursery Hypothesis
• Debunking Ancient Aliens Debunked