Dr. Dan Fleisch is Professor Emeritus in the Department of Physics and Director of Weaver Observatory at Wittenberg University, where he specializes in electromagnetics and space physics. He is the author of the internationally best-selling book A Student’s Guide to Maxwell’s Equations, published by Cambridge University Press in January 2008; this book has been translated into Japanese, Korean, and Chinese. Dr. Fleisch is also the author of A Student’s Guide to Vectors and Tensors, published by Cambridge Press in 2011, co-author of A Student’s Guide to Waves, published in 2015, and author of A Student's Guide to the Schrödinger Equation, published in 2020, and A Student's Guide to Laplace Transforms, published in 2022. Dr. Fleisch is also the co-author with the late Prof. John Kraus of The Ohio State University of the McGraw-Hill textbook Electromagnetics with Applications.

Prof. Fleisch has published technical articles in the IEEE Transactions, The Journal of Atmospheric and Terrestrial Physics, and Microwave Journal, and has presented more than a dozen professional papers on topics related to high-speed microwave instrumentation and radar cross-section measurement. He has been a regular contributor of science commentary to PBS station WYSO of Yellow Springs, and in 2006 he appeared in the documentary "The Dayton Codebreakers" shown on Public Television. 

Prof. Fleisch was named Outstanding Faculty Member at the Wittenberg Greek scholarship awards in 2000, and in 2002 he won the Omicron Delta Kappa award for Excellence in Teaching. In 2003 and 2005 he was recognized for Faculty Excellence and Innovation by the Southwestern Ohio Council for Higher Education (SOCHE), and in 2004 he received Wittenberg’s Distinguished Teaching Award, the university’s highest faculty award.

In November, 2010 Prof. Fleisch was named the Ohio Professor of the Year by the Carnegie Foundation and the Council for the Advancement and Support of Education. In August, 2013, Prof. Fleisch was named one of the Top 25 Science, Technology, Engineering, and Mathematics (STEM) Professors in Ohio.

Prof. Fleisch was named Series Editor for the Student's Guide Series at Cambridge University Press in 2018 and will serve as the Grand Canyon Astronomer in Residence in the fall of 2022.

Fleisch received his B.S. in Physics from Georgetown University in 1974 and his M.S. and Ph.D. in Space Physics and Astronomy from Rice University in 1976 and 1980, respectively.

Dr. Julia M. Kregenow is a Lecturer in Astronomy and Astrophysics at the Pennsylvania State University at University Park, PA. Kregenow has published peer-reviewed astrophysics research articles and contributed numerous conference poster and oral presentations on characterizing X-ray sources in merging galaxies, calibrating gamma-ray detectors for balloon-borne missions, and mapping the interstellar medium in the Milky Way Galaxy.

She has designed and taught Introductory Astronomy lecture, lab, and web courses at Cornell University, Ithaca College, and the Pennsylvania State University in classes ranging in size from 15 to 350. She incorporates many techniques to get her students actively engaged in her classes, both in the online and in-person environments. In addition to teaching her own classes, she mentors new faculty members, supervises graduate teaching assistants, coordinates 10 sections of Penn State's Astronomy Laboratory course, and conducts formal assessment of teaching and learning for over 3500 students and 15 faculty members per year for the Penn State Department of Astronomy and Astrophysics.

Her Astronomy Education professional activities include authoring peer-reviewed articles in the Astronomy Education Review and Journal of College Science Teaching, presenting the results of her education research projects at professional conferences, writing guest columns for the American Astronomical Society's member newsletter and for Spark, the education newsletter, establishing and securing funding for a faculty STEM (science, technology, engineering, and mathematics) education seminar series that encompasses over 20 science departments at five campuses, and instituting a graduate teaching assistant orientation program and pedagogy course.

Dr. Kregenow earned her B.A. in Physics at Wittenberg University in 2001, and completed both her M.A. and Ph.D. in Astronomy and Astrophysics at the University of California at Berkeley in 2003 and 2007. She was a National Physical Sciences Consortium fellow as a doctoral student from 2001-2007, and a Christine Mirzayan Science and Technology Policy Fellow at the National Academies in Washington DC in 2007. She was a postdoctoral researcher in Astronomy and Physics Education at Ithaca College from 2007-2009 before joining the Penn State Astronomy and Astrophysics faculty in 2009.