Stellarium is planetarium software that shows exactly what you see when you look up at the stars. It's easy to use, and free.
Celestia, a real-time 3D space simulation featuring a database of over 100,000 stars, nearly a hundred solar system, objects, and a complete catalog of extrasolar planets.
Many languages including Chinese (中文) pronunciations of words
Posted from Diigo. The rest of my favorite links are here.
