1. A Private Universe, video produced by Matthew Schneps and the Science Media Group of the Harvard-Smithsonian Center for Astrophysics.
2. AAVSO, American Association of Variable Star Observers, “SIDs – Sudden Ionospheric Disturbances”. Available from: .
3. “Benchmarks for Science Literacy: Project 2061.” American Association for the Advancement of Science. Oxford University Press, New York, NY, USA, 1993.
4. The Boyer Commission on Educating Undergraduates in the Research University: Reinventing Undergraduate Education: a Blueprint for America’s Research Universities; State University of New York, New York, NY 1998. Available from: .
5. Caper Team, University of Arizona, Tucson, AZ. Available from: .