This is an interactive orrery/planetarium program that uses images and astrometry data harvested from NASA and realistic simulated physics.
The best way to run it is to load it with sbcl, making sure you have the appropriate freeglut dlls in the proper places. This has been tested on GNU/Linux but is certain to be buggy on other platforms. Controls are WASD+mousewheel. Hold shift and ctrl for more or less sensitive inputs.
The next major update will include better astrometry data, relativistic effects, and much more.
Screenshots:
Scale comparison of the outer and inner solar systems. Note the distances in units of light-time:
