Janelle M. Bailey, Ph.D., is an Assistant Professor of Science Education in the Department of Curriculum & Instruction at the University of Nevada, Las Vegas. Her research interests include identifying and measuring change in students' knowledge about astronomy topics, the teaching and learning of science, and the effectiveness of professional development for science teachers. She teaches courses in science education, including methods and research courses, for both undergraduate and graduate students. She is the past Chair of the American Association of Physics Teachers' Space Science and Astronomy Committee. Dr. Bailey earned her B.A. in Astrophysics from Agnes Scott College and her M.Ed. in Science Education from the University of Georgia. Her Ph.D. is from the University of Arizona's Department of Teaching and Teacher Education, where she studied undergraduates' conceptual understanding of stars and star properties.