This web page, created by Edward L. Wright of the University of California, Los Angeles, provides answers to common questions regarding cosmology. Questions include the Universe's age, its origin, its fate, and its...

Authored by Jurgen Geisen, this site has more than sixty-five Java applets. The interactive resources provide detailed solar and lunar data and the daily and annual path of the sun and moon for any location. More...

This web page, authored and curated by David P. Stern, provides the lecture notes for an overview of Kepler's laws. A section is devoted to each of Kepler's three most prominent theories. It includes historical notes...

This set of lecture slides, authored by Christopher Churchill of Pennsylvania State University, provides images, pictures, information, and graphs that guide students through the variables involved in the Drake Equation....

A unit that integrates math, science, language and social studies, with astronomy as the center of focus. Lessons include Understanding Astronomical Numbers; The Milky Way; and Tenochtitlan and the Heavens. Recommended...