s. St. Paul, MN: West Publishing, 1996.Chaisson, Eric, and Steve McMillian. Astronomy Today. 3rd ed. Upper Saddle River, NJ: Prentice Hall, 1999.Ptolemy’s Devices-Epicycles. http://physics17.kent.edu/lee/7ideas/idea1/node13.html(Retrieved 5 Feb. 2000)Stearns, Peter N. World History in Brief: Major Patterns of Change and Continuity. 3rd ed. New York: Addison Wesley Longman, 1999. Treasure- Troves. “Nicholaus Copernicus.” http://www.treasure-troves.com/bios/Copernicus.html (Retrieved 7 Feb. 2000)Windows to the Universe. “Aristotle.” The Regents of the University of Michigan. http://www.windows.umich.edu/cgibin/tour.cgi?link=/people/ancien…/windows3.html&edu=hig (Retrieved 5 Feb. 2000)...
