← PBS Space Time · Season 2025

Is Our Model of Dark Energy WRONG? | New 4.2σ Results

S2025 · E12 · 29 May 2025 · 22 min

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?