Celestia is a space simulation that allows you to travel within the solar system, out to the stars, and beyond the Milky Way galaxy. Possible destinations include over 100,000 stars, nearly one hundred solar system destinations, and sixty recently-discovered extrasolar planets. Celestia uses OpenGL to render realistic real-time animations of space travel.
Version 1.5.1 may include unspecified updates, enhancements, or bug fixes.
A view of Earth from far out in space.
F R E E
[i]The Windows package of Celestia is a self-extracting archive; download it to your computer and then run it. [i/]
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A closeup of the space shuttle Discovery in orbit over Florida; this shot demonstrates Celestia's virtual texture feature for extremely high resolution mapping of planets.
The 1989 flyby of Neptune by Voyager 2--last stop before leaving the solar system.
Celestia is an open-source project. As such, its source code is provided and is freely modifiable and redistributable as per the GNU Public License. Installation instructions are provided in the INSTALL file.
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