What Does the Fourth Dimension Actually Look Like?
Oct 1, 2026
The Joy of Why
How Fast Is the Universe Really Expanding?
Physics, Astrophysics and Cosmology podcast with Adam Riess
The Joy of Why, Hosted by Steven Strogatz
About
Adam Riess explains how astronomers measure the universe's expansion and why different methods give conflicting results. He revisits the evidence for accelerated expansion and examines what the Hubble tension might reveal about measurement techniques or missing ingredients in cosmological models.
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