The Stellarium Web planetarium displays celestial objects in a browser-based sky view.
Stellarium
Stellarium is planetarium software that displays the sky and celestial objects.
About Stellarium
Stellarium is planetarium software that displays a realistic 3D sky as it appears to the naked eye, through binoculars, or through a telescope. Users can view stars, deep-sky objects, constellations, the Milky Way, planets and their satellites, and simulated events such as eclipses. The software also includes time control and a zoom function.
The homepage describes Stellarium as free. It is available for Linux, macOS, Windows, and as a web version called Stellarium Web. The Linux builds include a snap package and an AppImage. The macOS build requires macOS 11.0 or later. Windows builds require Windows 7 or later for the Qt5 version and Windows 10 or later for the Qt6 version. The latest version listed is 26.3.
Key features
- 3D sky display matching naked-eye, binocular, and telescope views
- Default catalogue of over 600,000 stars, with extra catalogues exceeding 220 million
- Default catalogue of over 80,000 deep-sky objects, with an extra catalogue of over 1 million
- Constellation figures and boundaries from 40+ different cultures
- Calendars from 35+ different cultures
- Telescope control and an HTTP interface for web-based or remote control
Best for: Students, educators, and amateur astronomers who want an on-screen, realistic view of the night sky.
Good for
- The homepage describes the software as free.
- Offers a multilingual interface with a large number of languages listed.
- Available on Linux, macOS, Windows, and as a web version.
Watch out for
- The macOS build requires macOS 11.0 or later.
- Windows builds require Windows 7 or later (Qt5) or Windows 10 or later (Qt6).
Stellarium at a glance
- Website
- stellarium.org
- Category
- Education & Learning › Space & Astronomy
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Linux, macOS, Web, Windows
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
Stellarium alternatives
Tools and sites you could use instead, ranked by how closely they match.
LightYear visualizes how long radio broadcasts take to reach different celestial bodies at light speed.
Stellarium renders realistic skies in real time with OpenGL and is available for Linux, Windows, macOS, and Haiku.
Open source
24 alternativesThe USGS Astrogeology map search lets users find planetary maps by celestial body, including planets, moons, and asteroids.
The COSMOS-Web DR1 viewer displays released NIRCam and MIRI images with overlays for photometric and spectroscopic data.
The SLIDER explorer displays satellite imagery from GOES-16 and Himawari-8 with interactive playback and overlays.
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Stellarium FAQ
Which operating systems does Stellarium support?
The homepage lists builds for Linux, macOS, and Windows, plus the Stellarium Web version. Linux is offered as a snap and an AppImage. The macOS build requires macOS 11.0 or later, and Windows builds require Windows 7 or later (Qt5) or Windows 10 or later (Qt6).
Does Stellarium support telescope control?
The feature list includes telescope control. The homepage does not describe how to set it up or which telescopes are supported.
What languages is the interface available in?
The homepage lists a multilingual interface with many languages, including English, Spanish, French, German, Japanese, and Chinese variants.
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