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Tech riderRev. 4 Oct 2026

Celestia

Ch 017.7of 34 Astronomy Apps
  1. 1Runs onAndroid, iOS, Linux, Mac, Web, Windows
  2. 2CostsFree plan
  3. 3Platform coveragecross-platform
3 lines stated Written from the maker's own pages: celestiaproject.space, celestia.mobi
Visit site Alternatives
The Celestia homepage

Overview

Celestia is ranked #1 of 34 in astronomy apps on Specifiction. It runs on Android, iOS, Linux, macOS, Web, Windows. There is a free plan.

Celestia plans and pricing

All plans
Celestia Free Free software under the GNU General Public License celestia.mobi · 4 Oct 2026

Compared on astronomy apps

Free plan
Yescelestiaproject.space
Platform coverage
cross-platformcelestiaproject.space

Facts

Purpose
Celestia is a real-time 3D visualization of space.celestia.mobi · 4 Oct 2026
Celestial objects
It simulates objects from planets and moons to star clusters and galaxies, viewable from different points in space and time.celestia.mobi · 4 Oct 2026
Orbital motion
The positions and movements of solar system objects are calculated in real time at any desired rate.celestia.mobi · 4 Oct 2026
Planetarium
Users can navigate to celestial worlds, land on their surfaces, and see solar system objects in the sky.celestia.mobi · 4 Oct 2026
Add-ons
Catalogues can be expanded with add-ons containing objects, high-resolution textures, 3D models, spacecraft, and fictional objects.celestia.mobi · 4 Oct 2026
Privacy
The site states that Celestia collects data only for analytic and diagnostic purposes.celestia.mobi · 4 Oct 2026
License
Celestia is licensed under the GNU General Public License.celestia.mobi · 4 Oct 2026
Open source
The project describes Celestia as open source and links to source code for its mobile frontends and original project.celestia.mobi · 4 Oct 2026
Support
The original project directs users to its forum or GitHub discussions, while frontend and website feedback can go through in-app feedback, GitHub issues, or email.celestia.mobi · 4 Oct 2026
Android availability
The Android version is available through Google Play, as a GitHub APK, and through alternative markets, which may differ in features.celestia.mobi · 4 Oct 2026
Apple availability
The iOS, iPadOS, and macOS versions are available on the App Store, with a direct GitHub download also offered for macOS.celestia.mobi · 4 Oct 2026
Windows availability
The Windows version is available through Microsoft Store or by sideloading the version provided on GitHub.celestia.mobi · 4 Oct 2026
Browser version
A lite version of Celestia can be tried in a web browser.celestia.mobi · 4 Oct 2026
Linux support
The latest stable original project release, version 1.6.4, is listed for Linux as source code.celestia.mobi · 4 Oct 2026

Best Celestia alternatives

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All accessCh 02 NASA Eyes Free planAndroidiOS Free to start7.7 All accessCh 03 Solar System Scope Free planAndroidiOS Free to start7.7 All accessCh 04 Cosmic Watch Free planAndroidiOS from $0.42/mo7.5 All accessCh 05 Star Chart Free planAndroidiOS Free to start7.4 All accessCh 06 Night Sky Free planAndroidiOS Free to start7.3 All accessCh 07 Seestar App AndroidiOS 7.2

Where it ranks on Specifiction

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Sources