Recurring Guest Characters Michio Kaku, Ph.D. - Physicist, CUNY 4 guest appearances Jonathan Young, Ph.D. - Founding Curator, Joseph Campbell Archives 3 guest appearances Travis Taylor, Ph.D. - Astrophysicist / Aerospace Engineer 3 guest appearances Nick Pope - U.K. Ministry of Defence (1985-2006) 2 guest appearances Founder, KosherTorah School 2 guest appearances Seth Shostak, Ph.D. - Senior Astronomer, SETI Institute 2 guest appearances Cryptozoologist 2 guest appearances Author, Beneath The Pyramids 2 guest appearances Michael Dennin, Ph.D. - Physicist, Univ. of California, Irvine 2 guest appearances Author / Ufologist 1 guest appearances Anthropologist 1 guest appearances Associate Professor of Folklore, Utah State University 1 guest appearances Author, Stone Circles: Around the World 1 guest appearances Sami Jarroush, Historian 1 guest appearances Kirsten Fisher, Ph.D. - Assoc. Prof of Biology, Cal State LA 1 guest appearances Amy Shira Teitel - Author, Breaking The Chains of Gravity 1 guest appearances Maggie Aderin-Pocock, Ph.D. - Author, The Book of The Moon 1 guest appearances