It looks like dark energy is actually getting stronger, which means it might eventually rip the entire universe to shreds.
March 30, 2026
Original Paper
Exploring the interplay of late-time dynamical dark energy and new physics before recombination
arXiv · 2603.26560
The Takeaway
The standard model of cosmology assumes dark energy is a constant 'background' force. This analysis found a high probability that it is actually 'phantom' energy, which grows more powerful as the universe expands and could lead to a 'Big Rip' scenario where even atoms are shredded.
From the abstract
Cosmological models exhibiting crossing of the phantom divide improve the fit to current data, suggesting late-time dark energy (DE) dynamics at $\sim3\sigma$ CL. However, they favor low values of $H_0$, in tension with SH0ES. This may point to the presence of new physics prior to the decoupling era. In this work, we reconstruct the background DE functions using the Weighted Function Regression (WFR) method, introducing three main improvements compared to our previous JCAP 12 (2025) 049. First,