# Celestia (open-source science and GIS app)

> Celestia is a free, open-source science and GIS app for Windows, macOS and Linux. Real-time 3D visualization of space. It has 2,370 GitHub stars and is released under the GPL-2.0 license. Its source code is on GitHub at CelestiaProject/Celestia.

A real-time space simulation that lets you experience our universe in three dimensions. Copyright 2001-2023, Celestia Development Team Celestia website: Celestia Wikibook: Celestia forums: Celestia Subreddit: Celestia Archive Repository: ## License

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/CelestiaProject/Celestia |
| Platforms | Linux, macOS, Windows |
| Interface | desktop GUI |
| GitHub stars | 2,370 |
| License | GPL-2.0 (open source) |
| Replaces | n/a |
| Language | C++ |
| Website | https://celestiaproject.space |
| Official | yes (published by the project behind the app) |
| Category | Science, GIS & engineering |
| Latest release | 1.6.4 (Nov 4, 2023) |
| Last commit | Oct 7, 2026 |

## Install

Download a build for your system from the project's releases (https://github.com/CelestiaProject/Celestia/releases) or website, or build it from source by following the README.

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