Katherine J. Mack is a theoretical cosmologist and Assistant Professor at North Carolina State University. Her academic research investigates dark matter, vacuum decay and the epoch of reionization. Mack is also a popular science communicator who participates in social media and regularly writes for Scientific American, Slate, Sky & Telescope, Time and Cosmos. After earning her doctorate, Mack joined the University of Cambridge as a Science and Technology Facilities Council (STFC) postdoctoral research fellow at the Kavli Institute for Cosmology.Later in 2012, Mack was a Discovery Early Career Researcher Award (DECRA) Fellow at the University of Melbourne. Mack was involved with the construction of the dark matter detector SABRE. In January 2018, Mack became an Assistant Professor and a member of university's Leadership in Public Science Cluster in the Department of Physics at North Carolina State University. She is scheduled to join the Perimeter Institute for Theoretical Physics in June 2022, as the inaugural Hawking Chair in Cosmology and Science Communication.