# Celestia (open-source education app)

> Celestia is a free, open-source education app for Android. 3D interactive planetarium. It has 217 GitHub stars and is released under the GPL-2.0-or-later license, and you can install it from F-Droid and Google Play.

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.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/celestiamobile/AndroidCelestia |
| Platforms | Android |
| Built with | Kotlin |
| GitHub stars | 217 |
| License | GPL-2.0-or-later (open source) |
| F-Droid | https://f-droid.org/packages/space.celestia.mobilecelestia/ (package space.celestia.mobilecelestia) |
| F-Droid anti-features | Relies on a non-free network service |
| Google Play | https://play.google.com/store/apps/details?id=space.celestia.mobilecelestia |
| App Store | not linked |
| Website | https://celestia.mobi/ |
| Official | no |
| Category | Education & language |
| Latest release | 26_9_0_rc1 (Sep 18, 2026) |
| Last commit | Oct 7, 2026 |

F-Droid builds its apps from source and flags anti-features: https://f-droid.org/en/docs/Anti-Features/

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