Galactic Beacons: Teaching Tools or Tombstones? (Narration Only)

It can be hard to hear a signal 100 miles away—so what does it take to build a beacon loud enough to be heard 100,000 light years away? In this episode, we explore galactic beacons: powerful transmissions that may teach, warn, or outlast the minds that made them.

Watch my exclusive video The End of Science https://nebula.tv/videos/isaacarthur-the-end-of-science

Get Nebula using my link for 40% off an annual subscription: https://go.nebula.tv/isaacarthur

Get a Lifetime Membership to Nebula for only $300: https://go.nebula.tv/lifetime?ref=isaacarthur

Use the link gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $30.

Visit our Website: http://www.isaacarthur.net

Join Nebula: https://go.nebula.tv/isaacarthur

Support us on Patreon: https://www.patreon.com/IsaacArthur

Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur

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:

Galactic Beacons: Teaching Tools or Tombstones? 

Episode 496a; April 27, 2025

Written, Produced & Narrated by: Isaac Arthur

Graphics: Darth Biomech, Jeremy Jozwik, Ken York YD Visual, Sergio Botero

Select imagery/video supplied by Getty Images

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.