The Best 18 Celestia Alternatives

  • Stellarium icon

    Stellarium

    Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope. It is being used in planetarium projectors.

    Free Open Source Mac OS X Windows Linux

  • Pioneer

    Pioneer is a space adventure game set in the Milky Way galaxy at the turn of the 31st century. The game is open-ended, and you are free to explore the millions of star systems in the game.

    Free Open Source Mac OS X Windows Linux

  • WorldWide Telescope

    The WorldWide Telescope (WWT) is a Web 2.0 visualization software environment that enables your computer to function as a virtual telescope, bringing together imagery...

    Free Open Source Windows Web

  • StarCalc

    StarCalc is the fastest professional astronomy planetarium & star mapping program for Windows 9x/ME/NT/2000/XP (StarCalc version for PocketPC is available).

    Free Windows Windows Mobile

  • WinStars

    WinStars uses the latest 3D technology to show the objects of our solar system in a realistic manner.

    Freemium Windows Linux Wine

  • Universe Sandbox

    Universe Sandbox is an interactive space simulator for Windows based PCs. Unlike most astronomy software that just shows you what the sky looks like or where the planets are, Universe Sandbox is a powerful gravity simulator.

    Commercial Mac OS X Windows Linux Steam

  • Gaia Sky

    3D visualization software for ESA's (European Space Agency) Gaia mission to chart about 1 billion stars of the Milky Way Galaxy.

    Free Open Source Mac OS X Windows Linux

  • Aciqra

    Aciqra (uh-SEE-kruh) is a free and open source virtual sky map and planetarium which tracks and displays astronomical bodies including planets, nebulae and stars to an...

    Free Open Source Windows Linux

  • Noctua Stellarium Mobile

    Stellarium Mobile is a fully-featured planetarium for your phone. It shows a realistic night sky map in 3D, just like what you see with the naked eye, binoculars or a telescope.

    Commercial

  • Exoplanet Explorer 3D

    Exoplanet Explorer takes you on a journey beyond the limits of our Solar System. Based on the latest available data, you’ll explore virtual models of more than 700 known...

    Free Android

  • Solar Model

    SourceForge presents the Solar Model project. Solar Model is an open source application. SourceForge provides the world's largest selection of Open Source Software....

    Free Windows

  • Digital Universe Atlas

    The Digital Universe Atlas incorporates data from dozens of organizations worldwide to create the most complete and accurate 3-D atlas of the Universe from the local...

    Free Mac OS X Windows Linux

  • Mitaka

    Mitaka is software for visualizing the known Universe with up-to-date observational data and theoretical models. Mitaka users can seamlessly navigate through space, from...

    Free Windows

  • Starry Night (series)

    The Starry Night apps are the most comprehensive educational astronomy apps. Use it with your introductory astronomy textbook or on its own. It's a powerful...

    Commercial Mac OS X Windows Android Tablet iPad