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Frontiers of Science: Katherine Freese


Frontiers of Science Lecture Series Presents

The Mystery of Dark Matter in the Universe

with Dr. Katherine Freese

Director, Weinberg Institute for Theoretical Physics, University of Texas at Austin

Event Details

Wednesday, December 3, 2025 | 6:30 p.m.
L. S. Skaggs Applied Science Building, University of Utah
275 S. University Street, Salt Lake City

The ordinary atoms in our bodies, air, planets, and stars make up only 5% of the universe. The remaining 95% is a cosmic recipe of 25% dark matter and 70% dark energy—both invisible and still mysterious. Freese will trace the dark matter puzzle from visionary 1930s scientists who first proposed it, to Vera Rubin's 1970s observations that proved its dominance in galaxies, to today's cutting-edge experiments in underground labs, space satellites, and the Large Hadron Collider.

What is dark matter? Leading candidates include WIMPs (weakly interacting massive particles), axions, and even primordial black holes. Billions of these particles pass through our bodies every second undetected, yet their gravity whirls stars around galaxies at breakneck speeds and bends light from distant objects. In this Frontiers of Science lecture, Freese will share the evidence for dark matter and discuss Dark Stars—early stars powered by dark matter that may have already been spotted by the James Webb Space Telescope. Solving this mystery will mark a defining moment in our quest to understand the universe.

Following the lecture, join us for a dessert reception and stargazing at our weekly star party on the Willard Eccles Astronomy Observatory rooftop.

Parking & RSVP

Frontiers of Science is the longest continuously running lecture series at the University of Utah. This event is free to the public and RSVPs are not required, but encouraged, by November 26. Parking for this event is available in the parking lot east of the S.J. Quinney School of Law. Guests are also welcome to park in Presidents Circle.

Registration for this event is now closed.

About Our Speaker:

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Katherine Freese is the Director of the Weinberg Institute for Theoretical Physics as well as the Jeff & Gail Endowed Chair of Physics at the University of Texas, Austin. She is also Guest Professor of Physics at Stockholm University, where she received a $13M grant over ten years (2014-2024) for research in Cosmoparticle Physics. She served as Director of NORDITA, the Nordic Institute for Theoretical Physics, from 2014-2106.  She works on a wide range of topics in theoretical cosmology and astroparticle physics. She has been working to identify the dark matter and dark energy that permeate the universe as well as to build a successful model for the early universe immediately after the Big Bang. She is the author of a book The Cosmic Cocktail: Three Parts Dark Matter, published in June 2014 by Princeton University Press.

Freese received her B.A. in Physics from Princeton University in 1977 (where as far as she knows she was the second female physics major); her M.A. in Physics in 1981 from Columbia University; and her Ph.D. in Physics in 1984 from the University of Chicago, where she was the recipient of the William Rainey Harper Award Fellowship. She held postdoctoral positions at the Harvard/ Smithsonian Center for Astrophysics, the Institute for Theoretical Physics in Santa Barbara, and a Presidential Fellowship at the University of California, Berkeley. She was an Assistant Professor at MIT from 1987-1991, where she was the recipient of a SLOAN Foundation Fellowship. Then she moved to the University of Michigan (as the first woman to be hired onto the faculty ) from 1991-2019 where she was awarded the NSF Presidential Young Investigator Award from 1990-1995 and was named George E. Uhlenbeck Professor of Physics.

For more information about Dr. Freese, visit katherinefreese.com.