Software Alternatives, Accelerators & Startups

Celestia VS Stellarium

Compare Celestia VS Stellarium and see what are their differences

Celestia logo Celestia

Real-time 3D visualization of space

Stellarium logo Stellarium

Stellarium is a free open source planetarium for your computer.
  • Celestia Landing page
    Landing page //
    2021-09-19

The expandable free and open-source real-time space simulator that lets you explore our universe in three dimensions.

  • Stellarium Landing page
    Landing page //
    2021-10-18

Celestia features and specs

  • Open Source
    Celestia is an open-source project, meaning that the community can contribute to and enhance its functionalities. This leads to continuous improvements and updates.
  • Realistic 3D Views
    The software offers realistic 3D visualizations of celestial objects, making it a powerful tool for both educational and recreational purposes.
  • Cross-Platform
    Celestia is available for multiple operating systems, including Windows, MacOS, and Linux, broadening its accessibility.
  • Extensible
    Users can add new objects, spacecraft, and other resources, allowing for a highly customizable experience.
  • Educational Value
    It serves as an educational resource for astronomy enthusiasts, students, and teachers by providing detailed and accurate information about celestial objects.

Possible disadvantages of Celestia

  • Steep Learning Curve
    New users might find the software overwhelming due to its extensive features and less intuitive interface compared to other astronomy software.
  • Performance Issues
    The software can be resource-intensive, leading to performance issues on lower-end hardware.
  • Limited Support
    Being an open-source project, official support can be limited, relying mainly on community forums and user contributions for troubleshooting.
  • Outdated Graphics
    While the platform offers realistic 3D views, some aspects of its graphics and user interface may appear outdated compared to newer commercial alternatives.
  • Lack of Real-Time Updates
    The software does not always feature real-time updates for certain celestial events, limiting its use for live tracking.

Stellarium features and specs

  • User-Friendly Interface
    Stellarium offers an intuitive and easy-to-use interface that makes it accessible for both beginners and advanced users. The clean design and accessible controls enhance user experience.
  • Realistic Sky Simulation
    The software provides a highly realistic simulation of the night sky, featuring accurate depictions of stars, planets, and other celestial objects. This realism is beneficial for educational purposes and amateur astronomers.
  • Extensive Database
    Stellarium includes a vast database of celestial objects, including over 600,000 stars, nebulae, galaxies, and other astronomical phenomena. Users can also extend this database by downloading additional catalogues.
  • Open Source
    Being an open-source project, Stellarium is free to use and benefit from continuous improvements and updates driven by a community of developers and enthusiasts. This also means users can contribute to its development.
  • Cross-Platform Compatibility
    Stellarium is compatible with multiple operating systems, including Windows, macOS, and Linux, ensuring that a wide range of users can use the software regardless of their system preferences.
  • Educational Features
    The software includes various educational tools such as constellation lines, mythological figures, and extensive descriptions of celestial objects, making it ideal for teaching astronomy.

Possible disadvantages of Stellarium

  • High System Requirements
    Stellarium can be resource-intensive, requiring a reasonably powerful computer to run smoothly. This might be a limitation for users with older or less powerful systems.
  • Steep Learning Curve for Advanced Features
    While the basic features are easy to use, more advanced features and customizations can be complex, requiring users to invest time in learning how to fully utilize the software.
  • Limited Mobile Functionality
    The mobile versions of Stellarium do not offer the same level of functionality and features as the desktop version, which might be disappointing for users looking for a robust mobile stargazing app.
  • Occasional Bugs
    As with many open-source projects, users may encounter occasional bugs or glitches. While these are often fixed quickly, they can be a source of frustration.
  • No Direct Telescope Support
    Unlike some other astronomy software, Stellarium does not offer direct support for controlling telescopes, which might be a drawback for advanced amateur astronomers looking for a comprehensive tool.

Celestia videos

Celestia Review - with Tom Vasel

More videos:

  • Review - Celestia - Shut Up & Sit Down Review
  • Review - Celestia Review with the Game Boy Geek

Stellarium videos

Stellarium - App REVIEW - Games in Education (Astronomy)

More videos:

  • Review - Intro to Stellarium 2019
  • Review - Apple's Iphone planetarium free app: Stellarium review and comments, perfect stargazing companion

Category Popularity

0-100% (relative to Celestia and Stellarium)
Universe Simulator
65 65%
35% 35
Space Simulator
42 42%
58% 58
Virtual Universe
50 50%
50% 50
Education & Reference
26 26%
74% 74

User comments

Share your experience with using Celestia and Stellarium. For example, how are they different and which one is better?
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Social recommendations and mentions

Based on our record, Stellarium should be more popular than Celestia. It has been mentiond 251 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Celestia mentions (28)

  • The Planets Today
    An honorable mention: https://celestiaproject.space This but in 3D and adjustable for any date. - Source: Hacker News / 6 months ago
  • ESASky
    Pretty much everything beyond our solar system is essentially fixed on a human timescale. Over 2000 years, a typical star will move about half a degree. That's the width of the moon in the sky. There are of course notable exceptions like Barnard's Star, whose movement is pretty obvious on photographs taken over several decades. If you want to explore how space changes over time, I recommend you look into... - Source: Hacker News / 7 months ago
  • My 9 year old nephews drawing of stars
    I think Celestia could be a good one. I also thought about SpaceEngine, but AFAIK it was kind of terrible at generating realistic planetary systems, among other things (pricey, huge, etc.). Source: almost 2 years ago
  • What are the best resources to explore space from my computer?
    Celestia was something I played with before. Pretty interesting. Source: almost 2 years ago
  • Lunar Occultation of Mars
    Celestia looks as though it would do it. Source: about 2 years ago
View more

Stellarium mentions (251)

  • SkyMap
    This is very cool, and looks like it targets you wanting to look stuff up and I will probably use it at some point. But I feel that anyone looking at this and thinking "oh that's cool" should also try installing Stellarium (https://stellarium.org/). It lets you see what you can see in the night sky from any location/time on Earth, and is really useful for helping you identify what you're seeing in the night sky. I... - Source: Hacker News / 7 months ago
  • Stellarium is a free GPL software which renders realistic skies in real time
    The project website is at http://stellarium.org/. There is no need to have images inside a project repository. Every maintainer already knows what it looks like. What next? Marketing materials? - Source: Hacker News / 12 months ago
  • Stellarium is a free GPL software which renders realistic skies in real time
    There's even a web version linked at https://stellarium.org/. - Source: Hacker News / 12 months ago
  • Constellations are younger than continents
    There’s also the FLOSS Stellarium: http://stellarium.org/. - Source: Hacker News / about 1 year ago
  • Not sure what this would be. Ive seen it for years and thought it was just a weirdly rectangular cluster of stars. What do you guys think?
    They're the Plieades. For future reference you can check on what's in the sky with software like Stellarium. Source: over 1 year ago
View more

What are some alternatives?

When comparing Celestia and Stellarium, you can also consider the following products

Space Engine - Space Engine is a realistic virtual Universe you can explore on your computer.

KStars - KStars is a Desktop Planetarium for KDE.

Universe Sandbox - Universe Sandbox ² is a physics-based space simulator where you can simulate Events and even break physics and friction with certain features.

Sky Map - Sky Map (formerly the Google Sky Map) turns your Android-powered mobile phone into a window on the...

Satscape - A satellite tracking program for Windows, Mac OS and Linux.

Sky Guide - A window to the stars has never been more beautiful and easy to use.