Celestia - Space Simulator

Celestia - Space Simulator

3D interactive planetarium

303 ratings
181 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • July 7, 2020
  • July 6, 2026

Features

Celestia - Space Simulator screenshot #1 for iPhone
Celestia - Space Simulator screenshot #2 for iPhone
Celestia - Space Simulator screenshot #3 for iPhone
Celestia - Space Simulator screenshot #4 for iPhone
Celestia - Space Simulator screenshot #5 for iPhone
Celestia - Space Simulator screenshot #6 for iPhone
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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

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What's New in Celestia

1.9.20

July 6, 2026

1. Optimize memory usage 2. Fix some crashes in loading 3. Improve Modify handling for textures

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Subscription plans

Celestia PLUS (Yearly)

Access to all the features in Celestia

$19.991 Year
How to cancel Celestia subscription ⁉️
4

In-App Purchases

$79.99

Celestia PLUS (Lifetime)

Access to all the features in Celestia

Events

Read more about Celebrate 25 Years of Celestia

Celebrate 25 Years of Celestia

Get a personalized UI and seamless add-on access

Feb 26, 2026 Mar 5, 2026

User reviews

Круто

Очень крутая игра только пж добавьте генерацию рандомных звезд и планет чтобы галактики не были пустыми и сделайте галактики более детальными.

Почему

Не скачивается

Jupiter is turning into a black hole

The space simulator is great and the add ons. The one thing i found was that if you go to jupiter at a certain point it just turns like half black and glitchy. Maybe because i have too many add ons but when i restarted it everything was back to normal and the kuiper belt just was deleted and all the other stars but the simulation is good. Update, jupiter turns into a literal black hole when you zoom in from far away and it is the same for basically all planets and stars. Earths water and land turns black. And the sun is tweaking.
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Jupiter is turning into a black hole

The space simulator is great and the add ons. The one thing i found was that if you go to jupiter at a certain point it just turns like half black and glitchy. Maybe because i have too many add ons but when i restarted it everything was back to normal and the kuiper belt just was deleted and all the other stars but the simulation is good
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This is good but I got a bit more for ya

Ok so celestia, Can you please make the sun shine more? Also can you make the landings of moons and rocky planets more detailed, meanwhile you go through the gassy planets? Jupiter, Saturn, Uranus, Neptune, Also can you make the universe just be named "Universe" so it could be less complicated? Even if you can’t do that just make the structure or the cosmic box.
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Developer apps

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.