These measurements provide much the strongest evidence to date that the "dark energy" that drives the accelerating expansion of the universe is itself evolving in time, with surprising properties.  The result is still not definitive, but it's strong enough to be taken quite seriously. DESI is an international collaboration of nearly 1000 scientists from 70 institutions, led by Lawrence Berkeley National Laboratory.  Within this large collaboration, scientists from OSU have played multiple large and critical roles. 

OSU News Release: New DESI results strengthen hints that dark energy may evolve

New York Times: "More Than a Hint That Deark Energy Isn't What Astronomer Thought"

CBS News: Dark energy findings could rewrite our understanding of the universe and its fate: "Cusp of a major discovery"

Scientific American: Shocking Dark Energy Findings Challenge the Standard Model of the Universe

Science: Mystery force behind the universe’s accelerating expansion may not be so constant after all

Quanta: Is Dark Energy Getting Weaker? New Evidence Strengthens the Case

For the full length of the paper, please visit, DESI Collaboration et al. (2025), DESI DR2 Results II: Measurements of Baryon Acoustic Oscillations and Cosmological Constraints