# How Far Beyond Earth Could Humanity Travel?

Page: https://stenobird.com/podcast/pbs-space-time-7778773/how-far-beyond-earth-could-humanity-travel
Text version: https://stenobird.com/podcast/pbs-space-time-7778773/how-far-beyond-earth-could-humanity-travel.md
Podcast: [PBS Space Time](https://stenobird.com/podcast/pbs-space-time-7778773)
Published: 2026-07-22T13:30:00+00:00
Episode link: https://traffic.megaphone.fm/VG7948710357.mp3?updated=1778672707
Audio file: https://traffic.megaphone.fm/VG7948710357.mp3?updated=1778672707
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JSON: https://stenobird.com/v1/public/podcasts/pbs-space-time-7778773/episodes/how-far-beyond-earth-could-humanity-travel
Duration seconds: 1433

## Resource

Check Out Untold Earth on PBS Terra: https://www.youtube.com/watch?v=-BVHSUMAWR4&list=PLzkQfVIJun2J5q9CIXPAlL95FSb0tJul7&index=85 PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime We humans have always been explorers. The great civilizations that have arisen across the world are owed to our restless ancestors. These days, there’s not much of Earth left to explore. But if we look up, there’s a whole universe out there waiting for us. Future generations may one day explore the cosmos and even settle entire other galaxies. But there is a hard limit to how much of the universe we can expand into. So, how big can humanity get? Episodes Referenced: How Much Of The Universe Can Humanity Ever See?: https://youtu.be/eVoh27gJgME Is Interstellar Travel Possible?: https://youtu.be/wdP_UDSsuro What If Humanity Is Among The First Spacefaring Civilizations?: https://youtu.be/uTrFAY3LUNw The Edges of Our Universe by Toby Ord: https://arxiv.org/pdf/2104.01191.pdf A causal limit to communication within an expanding cosmological civilization by S. Jay Olson: https://arxiv.org/pdf/2208.07871.pdf Check out the Space Time Merch Store https://www.pbsspacetime.com/shop Sign up for the mailing list to get episode notifications and hear special announcements! https://mailchi.mp/1a6eb8f2717d/spacetime Search the Entire Space Time Library Here: https://search.pbsspacetime.com/ Hosted by Matt O'Dowd Written by Euan McLean & Matt O'Dowd Post Production by Leonardo Scholzer, Yago Ballarini, Pedro Osinski, Caique Oliveira, Adriano Leal & Stephanie Faria Directed by Andrew Kornhaber Associate Producer: Bahar Gholipour Executive Producer…

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