Today, NASA goes open source with its code, joining endeavours such as SpaceHack [previously], WorldWind and (for more worldly coders) Github, GoogleCode, and the venerable SourceForge.
posted by Bora Horza Gobuchul on Jan 8, 2012 - 11 comments

Spacehack "A directory of ways to participate in space exploration. Interact and connect with the space community."
posted by chrismear on Aug 4, 2009 - 6 comments

The Apollo 11 Command Module code (Comanche054) and Lunar Module code (Luminary099) have been open sourced.
posted by chunking express on Jul 21, 2009 - 47 comments

Celestia is the most beautiful toy. It's a free (open source) simulator of the universe, including breathtaking models of known planets. Watch Jupiter rise over Io or follow the course of a solar eclipse. [more inside]
posted by grahamwell on Feb 4, 2003 - 21 comments