Answering the Most Important Problem in Cosmology Today: Is the Tension in the Hubble Constant Real?  
Scientific Sense ® by Gill Eapen: Professor Wendy Freedman is Professor of Astronomy and Astrophysics at the University of Chicago. Her current projects involve measurements of the Hubble constant -- the current expansion rate, as well as the past expansion rate, providing constraints on the acceleration of the universe and dark energy.

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