Stellarium
Stellarium is a desktop planetarium app for macOS that helps you explore the night sky with realistic 3D views of stars, planets, and deep-sky objects.
What is Stellarium?
Stellarium is a planetarium app for macOS that helps users explore and study the night sky from their computer. It is developed by the Stellarium project, with Alexander Wolf listed among the core developers and editors of its current documentation. The app shows a realistic sky in 3D and is useful for astronomy enthusiasts, students, educators, and telescope users who want to identify stars, constellations, planets, nebulae, and other celestial objects. Common uses include planning observations, learning constellation patterns, simulating eclipses and sky conditions for different dates and locations, and presenting astronomy concepts in classrooms or clubs. Stellarium also includes time controls, coordinate grids, sky culture content, telescope-related tools, and optional add-ons that expand what users can view and simulate. On a Mac, it functions as a native desktop astronomy application rather than a browser-based service.
Key features
- View a realistic 3D simulation of the night sky for different dates, times, and locations
- Identify stars, constellations, planets, satellites, and deep-sky objects
- Simulate astronomical events such as eclipses, sunrise, sunset, and comet motion
- Use zoom and sky navigation tools to examine objects in greater detail
- Display coordinate grids, labels, constellation art, and sky culture information
- Plan telescope observing sessions with object lookup and viewing aids
- Add more content and tools through plugins, scripts, and extra catalogs
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Safety overview
Status: Safe
Stellarium is legitimate astronomy software for viewing and simulating the sky. It may use location-related settings if you want accurate local sky views, which is normal for this kind of app. Removing it will only affect your ability to use its saved settings, added catalogs, scripts, and related astronomy data on this Mac.
Recommendation: Keep Stellarium if you use it for stargazing, astronomy learning, or observation planning. If you no longer use it, you can remove the app and then clean up its support files to free space, but any custom settings or added data may be lost.
Common paths
/Applications/Stellarium.app
Cache paths
~/Library/Caches/org.stellarium.Stellarium
Support paths
~/Library/Application Support/Stellarium
Preference paths
~/Library/Preferences/org.stellarium.Stellarium.plist
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