An open source 3D interactive world viewer created by NASA’s Learning Technologies project, released in mid-2004. It is now developed by NASA staff and open source community developers. World Wind lets you zoom from satellite altitude into any place on Earth. Leveraging Landsat satellite imagery and Shuttle Radar [...]

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An open-source, photo-realistic, real-time, three-dimensional viewing of the solar system, the galaxy and the universe. Celestia is an easy to use, freely-distributed, multi-platform, open source, software package which has become a valuable tool for astronomy education. Used in homes, schools, museums and planetariums around [...]

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