I want to share a great app for anyone teaching astronomy, the planets or the moon. It is called Stellarium. It is an open-source program—100% free—that turns any computer into an instant planetarium. You simply tell it where you are in the world and what time it is (or what time you will be stargazing) and it will tell you what you can look at. Students can find out exactly what constellations will be visible, what position the moons of Jupiter will be in, what phase the moon will be in Christmas night and even what satellites are currently overhead.
October 28, 2010