Episode Details

Cosmology looks triumphant on the surface, but Scott Dodelson argues its biggest success—the Lambda CDM model—is now under real pressure. In this condensed recap of Brian Keating’s full-length Into The Impossible conversation, the episode is distilled from a long interview into a minutes-long summary of the key ideas. Dodelson, who leads cosmic physics at Fermilab and the University of Chicago, explains how the Dark Energy Survey, the Hubble tension, Sigma 8, and the W tension are challenging the standard model of cosmology while also sharpening the evidence. Listeners will learn why dark matter, dark energy, and inflation remain unresolved, how collaboration and mentorship drive modern physics, and why tensions in the data may point to a scientific breakthrough—or a model that needs replacing. Listen now to get the key ideas in minutes.