The Universe: Explore the Alien Worlds of Outer Space *3 Hour Marathon* | History

Which planet is the most controversial? Why is Pluto not considered a planet by some? See more in this 3 hour marathon from The Universe. #HISTORY #TheUniverse Find out more about the show and watch full episodes on our site: http://www.history.com/shows/ Don't miss a video! Subscribe NOW: https://www.youtube.com/@HISTORY?sub_confirmation=1 Chapters: 0:00 The Outer Planets and Pluto's Demotion 45:47 The Life and Death of Stars 1:28:06 Alien Galaxies and the Universe 2:12:05 The Deadliest Places in the Universe 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: https://www.history.com/videos Sign Up For History Emails: https://www.history.com/emails/sign-up Browse Topical Videos: https://www.history.com/topics Facebook: https://www.facebook.com/HISTORY/ Instagram: https://instagram.com/history TikTok: https://tiktok.com/@history X: https://twitter.com/history YouTube: https://www.youtube.com/@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 The Universe: Explore the Alien Worlds of Outer Space *3 Hour Marathon* | History https://www.youtube.com/@HISTORY/