<p>What if humanity’s future isn’t on Earth—or even other planets—but in colossal artificial worlds built in space? In this episode, we explore the O’Neill Cylinder, a visionary space habitat that could house millions, serve as interstellar arks, and transform the cosmos into a network of orbital civilizations. Join us as we dive into the design, potential, and profound societal implications of these Islands in the Sky.</p><p><br></p><p>Watch my exclusive video The End of Science https://nebula.tv/videos/isaacarthur-the-end-of-science</p><p>Get Nebula using my link for 40% off an annual subscription: https://go.nebula.tv/isaacarthur</p><p>Get a Lifetime Membership to Nebula for only $300: https://go.nebula.tv/lifetime?ref=isaacarthur</p><p>Use the link gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $30.</p><p><br></p><p>Visit our Website: http://www.isaacarthur.net</p><p>Join Nebula: https://go.nebula.tv/isaacarthur</p><p>Support us on Patreon: https://www.patreon.com/IsaacArthur</p><p>Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur</p><p>Facebook Group: https://www.facebook.com/groups/1583992725237264/</p><p>Reddit: https://www.reddit.com/r/IsaacArthur/</p><p>Twitter: https://twitter.com/Isaac_A_Arthur on Twitter and RT our future content.</p><p>SFIA Discord Server: https://discord.gg/53GAShE</p><p><br></p><p>Credits:</p><p>The O'Neill Cylinder Space Habitat: Islands In The Sky</p><p>Episode 496; April 24, 2025</p><p>Written, Produced & Narrated by: Isaac Arthur</p><p>Edited by: Briana Brownell</p><p>Graphics: Anthrofuturism, Apogii.uk, Katie Byrne, Jarred Eagley, Jeremy Jozwik, Justin Dixon, Ken York YD Visual, Sergio Botero, Udo Schroeter</p><p>Select imagery/video supplied by Getty Images </p><p>Music Courtesy of Epidemic Sound http://epidemicsound.com/creator</p><p>Markus Junnikkala, "A Fleet Behind the Moon"</p><p>Phase Shift, "Forest Night"</p><p>Kai Engel, "Endless Story About Sun and Moon"</p><p>Chris Zabriskie, "Unfoldment, Revealment", "A New Day in a New Sector"</p><p>Taras Harkavyi, "Alpha and..."</p><p>Stellardrone, "Red Giant", "Billions and Billions"</p><p>See Privacy Policy at <a href="https://art19.com/privacy" rel="noopener noreferrer" target="_blank">https://art19.com/privacy</a> and California Privacy Notice at <a href="https://art19.com/privacy#do-not-sell-my-info" rel="noopener noreferrer" target="_blank">https://art19.com/privacy#do-not-sell-my-info</a>.</p>