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Tension in the Expanding Universe

Emily Tyhurst

May 19th, 2020, 7:00 p.m. EDT (convert to your time zone)

What happens when scientists disagree on a measurement? The Hubble constant, the number which describes the expansion of the universe, can be measured from the cosmic microwave background, and from supernova data. However, these numbers have been in worsening disagreement for years. What tools do we as scientists use to investigate when methods might have systematic errors built in? What would it mean for cosmology, the study of the history of the universe, if both measurements were right? Join PhD Candidate Emily Tyhurst for this exciting story that goes all the way back to the origins of the universe itself.

Join us for this livestream on our YouTube page.





May 19, 2020