How fast is the universe expanding? Two prominent approaches are finding different answers, propelling cosmology toward a crisis. Wendy Freedman, a renowned astronomer who has spent decades seeking the expansion rate, joins Brian Greene to discuss the latest thinking on this so-called Hubble Tension.
This program is part of the Big Ideas series, supported by the John Templeton Foundation.
Brian Greene is a professor of physics and mathematics at Columbia University, and is recognized for a number of groundbreaking discoveries in his field of superstring theory. His books, The Elegant Universe, The Fabric of the Cosmos, and The Hidden Reality, have collectively spent 65 weeks on The New York Times bestseller list.
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Wendy Freedman is the John and Marion Sullivan University Professor in Astronomy and Astrophysics at the University of Chicago. Her research is in observational cosmology (measures of the expansion rate …
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