|The Hertzsprung-Russell Diagram – A full-featured simulator for exploring the axes of the HR Diagram and the sizes of stars at various locations. It allows the user to plot the locations of the brightest stars in the sky as well as the nearest stars and answer the questions "Why are bright stars bright?" and "What is the most common type of star?".|
|Hubble's Law – A simple simulator for visualizing the expansion of the universe. Users can see vectors describing the velocities of galaxies and note that all galaxies are moving away from us. They can then change their perspective to another galaxy and note that Hubble's Law is seen from there as well.|
|Spin Simulator – A simple fun simulator for exploring look-back time concepts in the science fiction book Spin. It is designed to accompany a ClassAction Discussion Question.|
|Luminosity Simulator – A simple simulator for exploring the range of stellar luminosities and their dependence upon stellar radii and surface temperatures.|
NAAP Scale Height Lab
This work is supported by the National Science Foundation under grant #1044658.