The Space Telescope Science Institute (United States) has created this set of all-sky photograph surveys from the ground based telescopes Palomar and UK Schmidt in several colors. Images from any portion of the sky can...

This site offers a variety of Java applets which explore the motion of planets, stars, and galaxies. Each applet comes with background information on the pertinent astrophysics, a technical description of what's being...

This activity has students use internet resources to learn about celestial coordinates, and how to use an emphemeris to locate planets on a horizon sky map. The sky maps are then used for outdoor observing. A more...

This web site from Michael Richmond at the Rochester Institute of Technology contains lecture notes for an introductory course on galaxies and cosmology. It is meant for a non-science audience with a limited background...

The material on this website may be used as supplemental materials for students taking an introductory astronomy course. There is information on topics such as stellar evolution, the planets, the milky way, and much...