Celestia is an application for real-time 3D visualization of space, with a detailed model of the solar system, over 100,000 stars, more than 10,000 galaxies, and an extension mechanism for adding more objects.



OpenSpace is described as 'Is open-source interactive data visualization software designed to visualize the entire known universe and portray our ongoing efforts to investigate the cosmos' and is an app in the education & reference category. There are six alternatives to OpenSpace for a variety of platforms, including Windows, Linux, Mac, Android and iPhone apps. The best OpenSpace alternative is Celestia, which is both free and Open Source. Other great apps like OpenSpace are Space Engine, Gaia Sky, Cosmonium and Mitaka.
Celestia is an application for real-time 3D visualization of space, with a detailed model of the solar system, over 100,000 stars, more than 10,000 galaxies, and an extension mechanism for adding more objects.



Space Engine - a real-time 3D space simulator, procedural universe generator and visualiser. It lets you explore the universe in three dimensions, starting from planet Earth to the most distant galaxies.



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




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 the Earth to the edges of the known Universe.




"NAIF offers for public use a SPICE-enhanced version of the visualization tool Cosmographia. This is an interactive tool used to produce 3D visualizations of planet ephemerides, sizes and shapes; spacecraft trajectories and orientations; and instrument field-of-views and...



