celestia

Celestia is a 3D astronomy software program created by Chris Laurel. The program allows users to virtually travel through a simulated version of our universe. Celestia can display objects of various scales using OpenGL.Celestia is available for AmigaOS 4, Linux, macOS, Microsoft Windows, iOS, and Android. It is free and open source software released under the GNU General Public License.
Celestia's development stopped in 2013, with the final release in 2011. Since then, some of its development team went to work on Celestia.sci, a cosmological visualizer. In late 2016, the official Celestia forums were restored, and development restarted. As of 2020 beta testing builds of version 1.7.0 are available, as well as the bugfix release 1.6.2.Celestia is available for download from free software websites. Between 2001 and May 2017, the former central distribution site SourceForge counted approximately 12 million downloads.

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