Stellarium is a free open source planetarium for your computer.
The WorldWide Telescope (WWT) is a Web 2.0 visualization software environment that enables your computer to function as a virtual telescope, bringing together imagery from the best ground and space-based...
3D model of the Solar System and night sky in real time (running on Adobe Air)
A browser-based virtual planetarium of stars and planets customizable by location (latitude and longitude) and time of day.
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