TV Ancient Aliens - Season 15 Episode 11 : The Ultimate Guide to UFOs Ancient Aliens - Season 15 Episode 11 : The Ultimate Guide to UFOs 7/10 by 287 users UFO witnesses have reported a wide variety of objects in Earth's skies--and not only in modern times, but for centuries. What might we learn from examining their shapes, sizes, and the way they maneuver' Could they offer important clues about other intelligent life in our galaxy' Details Casts Posters Images Title Ancient Aliens - Season 15 Episode 11 : The Ultimate Guide to UFOs Alternative Titles Nos ancêtres les extraterrestres, 远古外星人, Ancient Aliens - Neue Erkenntnisse, Generacion alien, Alienígenas ancestrales, Alien Theory, 古代の宇宙人, Goście z Przeszłości, Drevni vanzemaljci First Air Date 2010-04-20 Last Air Date 2025-11-06 Number of Episodes 278 Number of Seasons 21 Genres Documentary, Mystery, Sci-Fi & Fantasy, Networks History, Casts Robert Clotworthy, Giorgio A. Tsoukalos, Ariel Bar Tzadok, Jonathan Young, David Childress, Erich von Däniken, Linda Moulton Howe, David Wilcock, George Noory, Philip Coppens, Nick Pope Plot Keywords , Narrator (voice) Robert Clotworthy Self Giorgio A. Tsoukalos Self Ariel Bar Tzadok Self Jonathan Young Self David Childress Self Erich von Däniken Self Linda Moulton Howe Self David Wilcock Self George Noory Self Philip Coppens Self Nick Pope Self Mike Bara Self Bill Birnes Self Hugh Newman Self Robert M. Schoch Self Nick Redfern Episodes List Ancient Aliens Season 15 :Episode 1 The Mystery of Nan Madol The Mystery of Nan Madol 2020-01-25 Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings... Ancient Aliens Season 15 :Episode 2 The Relics of Roswell The Relics of Roswell 2020-02-01 Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings... Ancient Aliens Season 15 :Episode 3 Destination Chile Destination Chile 2020-02-08 Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings... Ancient Aliens Season 15 :Episode 4 The Real Men in Black The Real Men in Black 2020-02-15 Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings... Ancient Aliens Season 15 :Episode 5 The Mystery of the Stone Giants The Mystery of the Stone Giants 2020-02-22 Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings... Ancient Aliens Season 15 :Episode 6 The World Before Time The World Before Time 2020-02-29 Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings... Ancient Aliens Season 15 :Episode 7 They Came from The Pleiades They Came from The Pleiades 2020-03-07 Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings... Ancient Aliens Season 15 :Episode 8 The Immortality Machine The Immortality Machine 2020-03-14 Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings... Ancient Aliens Season 15 :Episode 9 The Shapeshifters The Shapeshifters 2020-03-21 Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings... Ancient Aliens Season 15 :Episode 10 The Mystery of Skinwalker Ranch The Mystery of Skinwalker Ranch 2020-03-28 Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings... Ancient Aliens Season 15 :Episode 11 The Ultimate Guide to UFOs The Ultimate Guide to UFOs 2020-04-11 Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings... Ancient Aliens Season 15 :Episode 12 Aliens and the Presidents Aliens and the Presidents 2020-04-18 Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings...