> ## Content Index
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# Is Our Model of Dark Energy Wrong? | New 4.2σ Results
- URL: https://www.cascadepbs.org/show/pbs-space-time/episode/is-our-model-of-dark-energy-wrong-new-42-results-zygqm0/
- Published: 2025-06-17T20:15:52.000Z
- Updated: 2025-08-21T13:47:35.000Z
- Description: The biggest news in cosmology in recent years is that dark energy may be fading away.
- Author: Cascade PBS Staff
- Tags: PBS Space Time, Season 11, Episode 5, #ZZZ_Episode_11505453-0ee2-411b-85b9-c99cfccc88f2, #episode, #ZZZ_Show_ae70f836-13b6-4c9d-b61f-99f7b8bc29eb, #v1.16

The biggest news in cosmology in recent years is that the mysterious universe-accelerating entity we call dark energy may be fading away. The evidence for this is now strong enough that enormous effort is going into confirming this result. So what’s it going to take, and when are we going to know?