Astronomy Tools

  • Celestia
    Celestia

    Free

    A real-time space simulation that lets you experience our universe in three dimensions. 

  • Stellarium
    Stellarium

    Free

    Show a realistic sky in 3D.

  • KStars
    KStars

    Free

    A free, open source, cross-platform Astronomy Software.

  • WorldWide Telescope
    WorldWide Telescope

    Free

    Enables your computer to function as a virtual telescope, bringing together imagery from the best telescopes in the world.

  • AstroGrav
  • ChronosXP
    ChronosXP

    Free

    A free planetary hours program.

  • NASA’s Eyes
    NASA’s Eyes

    Free

    A way for you to learn about your home planet, our solar system, the universe beyond and the spacecraft exploring them.