Katie Mack

Katie Mack (Katherine J. Mack) is a theoretical astrophysicist and cosmologist, originally from Australia. She earned a physics degree from Caltech and a PhD in physics from Princeton University, followed by research and academic positions in the United States, the United Kingdom, and Australia. She is currently the **Hawking Chair in Cosmology and Science Communication at the Perimeter Institute for Theoretical Physics** in Canada. Her research focuses on dark matter, the early universe, galaxy formation, and possible ultimate fates of the cosmos. Mack is also known for her 2020 popular-science book, **_The End of Everything (Astrophysically Speaking)_**, which examines scenarios such as heat death, vacuum decay, and the Big Crunch.

Katie Mack is a **theoretical cosmologist/astrophysicist** who studies the universe’s evolution, including the **early universe**, **dark matter**, **black holes**, **galaxy formation**, and the **epoch of reionization**.[1][2][4][5] Her background includes a **B.S. in physics from Caltech (2003)** and a **Ph.D. in astrophysics from Princeton University (2009)**.[1][2] She then held postdoctoral research positions at the **University of Cambridge** and later at the **University of Melbourne**.[1][2] Her current role is the **Hawking Chair in Cosmology and Science Communication at the Perimeter Institute for Theoretical Physics**.[2][5][10] Earlier sources also list her as a faculty member at **North Carolina State University** in the Department of Physics and Astronomy.[1][2] She is also widely known for her public-facing work, especially her book **_The End of Everything (Astrophysically Speaking)_** and her science communication writing and talks.[5][8][10]

# Katie Mack Katie Mack is a theoretical astrophysicist specializing in cosmology and high-energy physics. Here are the key facts: **Background & Current Role:** - Holds a position as an assistant professor at the University of Melbourne's School of Physics - Previously held postdoctoral and faculty positions at other institutions including Princeton and North Carolina State University - PhD in theoretical physics **Notable Work:** - Research focuses on dark matter, dark energy, cosmic inflation, and the early universe - Known for work on "vacuum decay" scenarios and their cosmological implications - Contributes to public science communication through social media, podcasts, and writing **Public Presence:** - Active science communicator on social media platforms - Author of popular science writing on cosmology topics - Appears in media discussing astrophysics and cosmology She's recognized both for technical research contributions and for making cosmology accessible to general audiences. However, my information has a knowledge cutoff date, so I'd recommend checking current sources for her most recent positions or work.

**Dr. Katie Mack** is an Australian theoretical astrophysicist and science communicator known for her work in cosmology and popular science. * **Background:** She earned her B.Sc. in Physics from the California Institute of Technology (Caltech) in 2003 and her Ph.D. in Physics from Princeton University in 2009. She has held postdoctoral research positions at the University of Cambridge, the University of Melbourne, and the University of Cape Town. * **Current Role:** She is currently the Hawking Chair in Cosmology and Science Communication at the Perimeter Institute for Theoretical Physics in Waterloo, Ontario, Canada. * **Notable Work:** Mack’s research focuses on the physics of dark matter, the early universe, galaxy formation, and the ultimate fate of the cosmos (cosmology). She is widely recognized for her science communication, notably as the author of the bestselling 2020 book *The End of Everything (Astrophysically Speaking)* and for her prominent presence on social media discussing astronomy and physics.

Katie Mack (Katherine J. Mack) is a theoretical cosmologist specializing in the early universe, dark matter, and cosmic finales. She earned a BS from Caltech and a PhD from Princeton, with prior positions at Cambridge and other institutions. She currently holds the Hawking Chair in Cosmology and Science Communication at the Perimeter Institute for Theoretical Physics. Her notable work includes research on vacuum decay and the universe’s end states, plus the popular book *The End of Everything (Astrophysically Speaking)* and active science outreach.