Celestia is an OpenGL-based 3D space simulation for Unix and Win32 that lets you travel through the solar system, to the stars, and even beyond the galaxy. Visit over 100,000 stars, 100 solar system bodies, and all known extrasolar planets.

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Ohloh Analysis Summary

Updated 29 Aug 2008 06:07 UTC


Ratings & Reviews

Community Rating
4.6/5.0

Based on 12 user ratings.

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about 1 year ago Avatar
Celestia is very cool.

  by syphax


The graphics are really amazing- probably the best I've seen in an open source application. And it runs on Windows/Mac/Linux (I've used the first two, so far...)!

I find the controls a little opaque, but I haven't spent a lot of time RTFM. My 5-year-old twins have recently developed an interest in space (they are upset at Michael Collins didn't get a turn on the Moon), so it's great fun to zoom around the solar system with ... [More] them.

The Mac port seems a little unstable (it crashes from time to time), but frankly it's more stable than Google Earth has been for me. [Less]

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Who uses Celestia?

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Who contributes to Celestia?

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Project Cost

This calculator estimates how much it would cost to hire a team to write this project from scratch. More »
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Codebase 148,252
Effort (est.) 38 Person Years
Avg. Salary $ year
$ 2,091,627