# What If The Cosmological Constant Wasn't Truly Constant?

Page: https://stenobird.com/podcast/pbs-space-time-7778773/what-if-the-cosmological-constant-is-not-constant
Text version: https://stenobird.com/podcast/pbs-space-time-7778773/what-if-the-cosmological-constant-is-not-constant.md
Podcast: [PBS Space Time](https://stenobird.com/podcast/pbs-space-time-7778773)
Published: 2026-06-22T09:30:00+00:00
Episode link: https://traffic.megaphone.fm/VG6000512089.mp3?updated=1778670822
Audio file: https://traffic.megaphone.fm/VG6000512089.mp3?updated=1778670822
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JSON: https://stenobird.com/v1/public/podcasts/pbs-space-time-7778773/episodes/what-if-the-cosmological-constant-is-not-constant
Duration seconds: 1277

## Resource

Weathered: Earth's Extreme is available globally at: https://to.pbs.org/WeatheredST or the PBS App (US Only) Check out the Space Time Merch Store https://www.pbsspacetime.com/shop We know that the universe is getting bigger. And we know that the speed that the universe is getting bigger is also getting bigger. The standard assumption is that the acceleration rate is itself constant, which will surely result in ultimate heat death. But a recent survey of primordial sound waves frozen into the way galaxies are sprinkled through the universe reveals that this fate is now in question. 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 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 Richard Dyer & Matt O'Dowd Post Production by Leonardo Scholzer, Yago Ballarini & Stephanie Faria Directed by Andrew Kornhaber Associate Producer: Bahar Gholipour Executive Producer: Andrew Kornhaber Executive in Charge for PBS: Maribel Lopez Director of Programming for PBS: Gabrielle Ewing Assistant Director of Programming for PBS: John Campbell Special Thanks: Adam Schwartz & Kurt Ritta Spacetime is a production of Kornhaber Brown for PBS Digital Studios. This program is produced by Kornhaber Brown, which is solely responsible for its content. © 2024 PBS. All rights reserved. End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/user/MultiDroideka Space Time Was Made Possible In Part By: Big Bang Wojciech Szymski Bryce Fort Peter Barret…

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