Category Archives: Space


A Unix program that simulates the movement of stars. It starts by putting a bunch of stars on the screen, and then it lets the inter-body gravitational forces move the stars around. The result is a lot of neat wandering … Continue reading

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Celestia is an application for real-time 3D visualization of space, with a detailed model of the solar system, over 100,000 stars, more than 10,000 galaxies, and an extension mechanism for adding more objects. Find Celestia at:

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Open-SESSAME Framework

The Open-Source, Extensible Spacecraft Simulation And Modeling Environment (Open-SESSAME) is a collection of libraries, toolkits, and extension points that provide a framework for creating and analyzing spacecraft models of varying complexity. Find Open-SESSAME Framework at:

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