Dive into this year’s most-watched Ancient Aliens moments. These fan-favorite segments rose to the top in 2025, showcasing the theories, discoveries, and unexplained mysteries viewers couldn’t stop revisiting. Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite shows on The HISTORY Channel website at #HISTORY #AncientAliens Find out more about the show and watch full episodes on our site: "Ancient Aliens" explores the controversial theory that extraterrestrials have visited Earth for millions of years. Don't miss a video! Subscribe NOW: @HISTORY?sub_confirmation=1 ABOUT THE HISTORY CHANNEL: The HISTORY® Channel, a division of A+E Global Media, is the premier destination for historical storytelling. From best-in-class documentary events, to a signature slate of industry leading nonfiction series and premium fact-based scripted programming, The HISTORY® Channel serves as the most trustworthy source of informational entertainment in media. FOLLOW HISTORY CHANNEL: Watch Full Episodes: Sign Up For History Emails: Browse Topical Videos: Facebook: Instagram: TikTok: @history X: YouTube: @HISTORY Copyright Notice: This video and my YouTube channel contain dialog, music, and images that are property of The HISTORY® Channel. You are authorized to share the video link and channel, and embed this video in your website or others as long as a link back to our YouTube Channel is provided. © 2025 The HISTORY® Channel Ancient Aliens: TOP ALIEN MYSTERIES OF 2025 | Part 1 @HISTORY/