Has mankind ever been visited by aliens from outer space? It is one of the most compelling questions ever asked, and this "Ancient Mysteries" program from the History Channel tries to uncover the truth about UFOs and extraterrestrials. From historical reports of flying objects in the sky to ancient monuments that reference the stars, you'll begin to learn why many believe that we are not alone in the universe. 50 min. Standard; Soundtrack: English Dolby Digital stereo.