Thomas E. Brennan holds a PhD, M.S., and B.S. in Physics, with a solid educational background. He has extensive teaching experience in colleges and universities, having worked at institutions such as Ferris State University, St. Francis University, and West Virginia Wesleyan University in the USA. He mainly teaches physics and astronomy-related courses, covering both in-person and online teaching modes. He has very good English oral and written skills, with no Chinese language abilities.