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Celestia - Space Simulator

Celestia - Space Simulator

3D interactive planetarium

338 ratings
265 reviews
📚 Education
🔍 Reference
Free
In-App Purchases

Details

Released
July 7, 2020
Updated
October 19, 2026

Features

Developer

林峰 李
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Celestia - Space Simulator screenshot #1 for iPhone
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Celestia - Space Simulator screenshot #5 for iPhone
Celestia - Space Simulator screenshot #6 for iPhone
iphone
ipad
🧾$79.99
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About

Explore the universe in real-time 3D. Visit planets, moons, star clusters, and galaxies, viewing them from any point in space and time. Customize your experience with expandable content and detailed simulations.

✓Real-time 3D space visualization
✓Explore planets, moons, stars, galaxies
✓Accurate solar system object positions
✓Interactive planetarium mode
✓Expandable content with add-ons
✓Customizable celestial databases
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What users say about Celestia

Reviews of Celestia are mostly positive: the Education app is rated 4.4/5 from 338 App Store ratings. What users like most: realistic space simulation, ability to explore galaxies and star systems. Top complaints: occasional crashes and glitches, limited exploration beyond Milky Way and Andromeda. Summarized from real user reviews.

Positive things

  • ⭐Realistic space simulation
  • 🌌Ability to explore galaxies and star systems
  • 🔍Detailed planet and moon textures
  • 📷Great for taking screenshots
  • 🤖Reminds users of Space Engine

Negative things

  • 🐛Occasional crashes and glitches
  • 🌌Limited exploration beyond Milky Way and Andromeda
  • 🌍Flat terrain on planets
  • 🔍Lack of detail on some celestial objects
  • 🔒Paywall for some features
See all reviews

What's New in Celestia

26.10.0

October 19, 2026

1. Add SkyPlane reference frames for objects 2. Fix cloud scattering above atmospheres 3. Fix display of negative rotation periods 4. Update official star names 5. Update the exoplanet catalog 6. Add a red giant star texture 7. Update asteroid data and models 8. Add Donaldjohanson and Torifune asteroids 9. Improve rendering and controls for devices with corner safe areas and vertical toolbars 10. Require iOS and iPadOS 16 or later

More
4

Subscriptions & In-App Purchases

Celestia PLUS (Yearly)

Access to all the features in Celestia

$19.991 Year
How to cancel Celestia subscription ⁉️

Events

Read more about Celebrate 25 Years of Celestia
Event EndedSpecial Event

Celebrate 25 Years of Celestia

Get a personalized UI and seamless add-on access

Feb 26, 2026 — Mar 5, 2026

Read More

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User reviews

Most RecentHighest RatedLowest Rated

Good, has an issue

Radio galaxies are not possible, add a radio galaxy template
ZMZachary Micmulen

Ужасно!

Приложение лагает и ломается и не находит в поисковике даже то что находилось написано « Няма намерено резултат» так и написано. просто ужасное приложение не советую
Ллылввб

W game

It’s so good and realistic! I even love the downloadable planets stars black holes and more! If you want a realistic Mobile space game I totally recommend it
IIsaoahx

就算不用花钱买插件都够用

随便点一颗亮的星星都能看，强推
还还不KKK几

Please make a spawning feature

I love the game and all and everything’s great but can you PLEASE add a feature to spawn in stuff (kinda like universe sandbox) b/c I think it would be soo cool and hell maybe even help the mobile community have free universe sandbox before the actual one even came out! I really want this feature tho. Great game either way tho!
Show more
AAnderdingus2.912
See 260 more reviews

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User experience

🐞

Reported Bugs

3 issues

Milky Way and other galaxy textures not loading properly

Bug

Crashes when using certain add-ons

Bug

Issues with planet and moon orbits not being accurate

Bug
✨

Requested Features

5 requests

Add more exoplanets and distant star systems

Feature

Implement terrain generation for planets

Feature

Expand to include more galaxies and the overall universe structure

Feature

Add support for black holes, pulsars, and other exotic objects

Feature

Improve controls and camera movement

Feature

FAQ

What does Celestia do?

Celestia is a real-time 3D space simulator that allows you to explore the universe. You can visit a vast array of celestial objects, including planets, moons, star clusters, and galaxies, and view them from any perspective in space and time.

What are the key features of Celestia?

Key features include real-time 3D visualization of space, accurate simulation of solar system object positions and movements, an interactive planetarium mode for viewing the sky from any celestial body, and expandable content through add-ons for new objects and textures.

Is Celestia free to use?

The application is free to download and use, but it does offer in-app purchases. These purchases may provide access to additional content or features beyond the core simulation.

What kind of celestial objects can I explore?

You can explore a wide range of celestial objects, including planets, moons, star clusters, and galaxies. The database is expandable, meaning you can add more objects like comets, stars, asteroids, and even fictional spacecraft through add-ons.

Can I customize the content in Celestia?

Yes, Celestia's content is highly customizable. You can expand its catalogues with various add-ons that introduce new objects, high-resolution textures for planets, and 3D models for asteroids and spacecraft, allowing you to tailor the simulation to your interests.