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.

Celestia is real-time 3D space simulation which lets you travel through our solar system and to over 100,000 stars in our neighborhood.

a real-time visual simulation of space

Celestia is a free 3D astronomy program for Windows, Mac OS X, and GNU/Linux. Created by Chris Laurel, it is licensed under the GNU General Public License.

Celestia is a black metal band from Avignon, France. They formed sometime in 1995. The founding member and vocalist, Noctu, is the only remaining original member.