Planetary movement and space exploration have been exciting topics in Paul Yun's calculus classes for over 10 years. Paul is a professor of mathematics at El Camino College in Torrance, California. As a father of three sons, he has been an adult volunteer for the Boy Scouts of America. Also, he is active in helping the homeless in Los Angeles Downtown. Paul encourages college students as well as young people to pursue careers in mathematics and science by sharing thrills and wonders in space. Paul enjoys biking and playing soccer.