The Expanding Universe with Wendy Freedman

Wendy Freedman spent part of her career measuring the age of the universe. Now she’s working on a project that may very well give scientists a chance to glimpse into its birth.  

Freedman, the John & Marion Sullivan University Professor of Astronomy & Astrophysics, works in the field of observational cosmology, measuring the expansion rate of the universe. In 2001, she and a team of scientists found that the universe is around 13.7 billion years old—far more precise than the previous estimate in the 10- to 20-billion-year-old range.

Freedman was the founding leader from 2003 until 2015 of an international consortium of researchers and universities (including UChicago) to build the world’s largest telescope high in the mountains of Chile. The Giant Magellan Telescope will be as tall as the Statue of Liberty when complete, and ten times more powerful than the Hubble Space Telescope—with the ability to look back at the dawn of the cosmos.

On this episode of Big Brains, Freedman discusses her research on measuring the age of the universe, her leadership of the Giant Magellan Telescope and the search for life outside our solar system.   

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