Fermi Paradox Disappearing Stars & Cosmic Voids

If the Universe is inhabited by older alien civilizations, those who have ventured out to the stars and colonized galaxies, we would expect to see a footprint of extraterrestrial activity. Could the many stars whose brightness has dimmed be indicative of Dyson Spheres or other Megastructures? Could the Cosmic Voids vastly bigger than any galaxy be the work of even greater and older starfaring species? Watch the video version: https://youtu.be/4Iv-hj9Yx-I The first 1000 people who click the link will get 2 free months of Skillshare Premium: https://skl.sh/isaacarthur19 Visit our Website: http://www.isaacarthur.net Support us on Patreon: https://www.patreon.com/IsaacArthur SFIA Merchandise available: https://www.signil.com/sfia/ Social Media: Facebook Group: https://www.facebook.com/groups/1583992725237264/ Reddit: https://www.reddit.com/r/IsaacArthur/ Twitter: https://twitter.com/Isaac_A_Arthur on Twitter and RT our future content. SFIA Discord Server: https://discord.gg/53GAShE Credits: The Fermi Paradox: Disappearing Stars & Cosmic Voids Episode 248; July 23, 2020 Written, Produced & Narrated by Isaac Arthur Editors: S. Kopperud Cooper de Ruiter Daniel Paul Bobo Keith Blockus Cover Art - Jakub Grygier https://www.artstation.com/jakub_grygier Graphics: Fishy Tree https://www.deviantart.com/fishytree/ Jarred Eagley Jeremy Jozwik https://www.artstation.com/zeuxis_of_losdiajana Mihail Yordanov Sergio Botero https://www.artstation.com/sboterod?fref=gc Udo Schroeter Music Courtesy of Epidemic Sound http://epidemicsound.com/creator See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.