Have you ever seen a solar eclipse? You might know that one occurs when the moon orbits between the earth and the sun, but did you ever think of it as an actual shadow being cast across space? Explore animated diagrams, learn the about lunar shadows, and even see what the sun looks like from the earth at different stages of an eclipse. Compare the change of view between the Northern and Southern hemispheres. In what region of the earth would you have to live to most likely witness a total solar eclipse?

(You will need the Flash plug-in to see the interactive. Click here to get the plug-in.)