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Celestia

Celestia is a free, open-source education app for Android. 3D interactive planetarium. It has 218 GitHub stars and is released under the GPL-2.0-or-later license, and you can install it from F-Droid and Google Play.

github.com/celestiamobile/AndroidCelestia (opens in a new tab)

Data as of from the GitHub API and the F-Droid index; description from the project's repository or F-Droid listing. Report an error

Get it on F-Droid (opens in a new tab)Google Play (opens in a new tab)View on GitHub (opens in a new tab)

About Celestia

Celestia — real-time 3D visualization of space Note: this is an unofficial version of Celestia. It may be slow to update or miss some features. 3D Space Simulator | Celestia lets you explore our universe in three dimensions. Celestia simulates many different types of celestial objects. From planets and moons to star clusters and galaxies, you can visit every object in the expandable database and view it from any point in space and time. The position and movement of solar system objects is calculated accurately in real time at any rate desired. Interactive Planetarium | Celestia serves as a planetarium – for an observer on any celestial object.

Privacy and F-Droid

F-Droid builds Celestia from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.

  • Relies on a non-free network service

Screenshots

  • Celestia screenshot 1
  • Celestia screenshot 2
  • Celestia screenshot 3

Screenshots from the app's F-Droid listing.

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FAQ

Celestia FAQ

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Is Celestia free and open source?

Yes. Celestia's source code is public on GitHub under the GPL-2.0-or-later license, which is OSI-approved or FSF-free. F-Droid flags these anti-features on its latest build: relies on a non-free network service.

How do I install Celestia?

You can install Celestia from F-Droid (package space.celestia.mobilecelestia) and from Google Play; the links are on this page. Its GitHub repository also publishes releases (latest: 26.10.0).

Is Celestia still maintained?

The repository's most recent commit was on Oct 28, 2026. Its F-Droid listing was last updated on Oct 22, 2026. appsgit only lists apps whose repository had a commit in the last six months.