Eclipse Interactive What’s the difference between lunar and solar eclipses? What causes each kind of eclipse? Why don’t we see eclipses more often? What would they look like if the angular diameters of the Moon and the Sun weren’t so close? Unlock the secrets of eclipses with this interactive tool.
Doppler Shift Interactive Astronomers use the Doppler Effect to determine the motion and speed of galaxies and other distant objects. This Interactive shows you what the Doppler Effect is: how the frequency and wavelength of light or sound waves change as the source or the observer (or both) move relative to each other.
Escape Velocity Interactive Your mission: to determine how fast to fire a rocket so that it escapes the gravity of its planet.
Solar System Builder This Interactive will allow students to build their own solar system by placing planets of different masses at different locations and watching these systems evolve
Planet Size Comparison This is an interactive that allows you to compare the relative sizes of the planets in our solar system.
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