Watch new episodes of Ancient Aliens returning Saturday Jan 25, at 10/9c, and stay up to date on all of your favorite History Channel shows at history.com/schedule. Ancient astronaut theorists say YES, extraterrestrials used the Benben Stones as intergalactic portals in this clip from Season 13, "Earth Station Egypt ." #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: po.st/SubscribeToHistory Find out more about the show and watch full episodes on our site: po.st/AncientAliens Check out exclusive HISTORY content: History Newsletter: po.st/HistoryNewsletter Website - po.st/HistoryWeb Facebook - po.st/HistoryFacebook Twitter - po.st/HistoryTwitter "Ancient Aliens" explores the controversial theory that extraterrestrials have visited Earth for millions of years. HISTORY® is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entertaining manner across all platforms. The network’s all-original programming slate features a roster of hit series, premium documentaries, and scripted event programming.