The Astronomy Center has provided educational resources to introductory astronomy educators since 2003. Over the past 20 years, the rapid pace of discovery has rendered some of our linked resources obsolete. Thus, the Astronomy Center will be decommissioned on March 1, 2022. Our highest quality resources will be retained on ComPADRE.org.
This site provides a collection of Java applets written for teaching, creating exercises, allowing self-study and for use as small research tools. They aim to permit an interactive exploration of the behaviour of physical systems. They illustrate concepts dealing with space exploration, the solar system, stars, nebulae, galaxies, astrophysics, and astronomical instruments. There is also a link that provides more resources for teaching astronomy.
<a href="https://www.compadre.org/astronomy/items/detail.cfm?ID=2053">Köppen, Joachim. Java Applets for Teaching of AstroPhysics. September 26, 2006.</a>
Köppen, J. (2006, September 26). Java Applets for Teaching of AstroPhysics. Retrieved December 17, 2025, from https://portia.astrophysik.uni-kiel.de/~koeppen/apindex.html
Köppen, Joachim. Java Applets for Teaching of AstroPhysics. September 26, 2006. https://portia.astrophysik.uni-kiel.de/~koeppen/apindex.html (accessed 17 December 2025).
@misc{
Author = "Joachim Köppen",
Title = {Java Applets for Teaching of AstroPhysics},
Volume = {2025},
Number = {17 December 2025},
Month = {September 26, 2006},
Year = {2005}
}
%A Joachim Köppen %T Java Applets for Teaching of AstroPhysics %D September 26, 2006 %U https://portia.astrophysik.uni-kiel.de/~koeppen/apindex.html %O application/java
%0 Electronic Source %A Köppen, Joachim %D September 26, 2006 %T Java Applets for Teaching of AstroPhysics %V 2025 %N 17 December 2025 %8 September 26, 2006 %9 application/java %U https://portia.astrophysik.uni-kiel.de/~koeppen/apindex.html
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