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...

In this computer-based exercise, students analyze realistically simulated X-ray spectra of a supernova remnant and determine the abundances of various elements in them. In the end, they will find that the elements...

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 website, created by Andrew Hamilton of the University of Colorado-Boulder, gives multiple gif animations related to black holes ranging from falling into a black hole to Hawking radiation. These animations are...

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...