Investigates the possibility of early space travellers and UFO's having visited several ancient civilizations on the earth centuries ago.

The first official companion book to HISTORY® network’s hit series Ancient Aliens®: a powerful journey through human history that explores fascinating unans

New York Times best-selling author and Secret Space Program researcher Mike Bara brings us this lavishly illustrated volume on alien structures on Mars. Was the

It is often unacknowledged how deep a debt modern ancient astronaut theorists owe to the nineteenth-century Theosophical movement, a Victorian-era amalgam of Sp