Celestia is described as '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' and is a very popular Star Map in the Education & Reference category. There are more than 25 alternatives to Celestia for a variety of platforms, including Windows, Linux, Mac, Android Tablet and iPad. The best alternative is Stellarium, which is both free and Open Source. Other great apps like Celestia are Space Engine (Paid), Universe Sandbox (Paid), Gaia Sky (Free, Open Source) and Elite: Dangerous (Paid).
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.
Space Engine vs Celestia opinions
Almost everyone thinks Space Engine is a great alternative to Celestia.
You can not only travel throughout the Milky Way; Visiting the stars, the planets with their respective moons, comets, asteroids, black holes (in which one can see the shift towards the blue), etcetera. In addition, the music gives an atmosphere of relaxation.
Elite: Dangerous is a space adventure, trading, and combat simulator that is the fourth release in the Elite video game series. Piloting a spaceship, the player explores a realistic 1:1 scale open world galaxy based on the real Milky Way, with the gameplay being open-ended. Represent entire series of Elite: Dangerous games including Elite,Elite: Dangerous,.
Elite: Dangerous vs Celestia opinions
pros, cons and recent comments
Elite is a full fledged game (there is significant travel time, currency, ship purchases and missions, etc). Some real stellar bodies are modeled, but most of them are procedurally generated. The feeling of exploring space in person is significantly more immersive, but it's value as a stellarium is minimal.
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.
The Exoplanet app is a highly visual and interactive catalogue of all known exoplanets. Exoplanets are planets orbiting stars beyond our own Solar System. It is frequently updated whenever new discoveries are confirmed.