Celestia

Linfeng Li

In-app purchases

About this app

Celestia — real-time 3D visualization of space

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.

You can easily navigate to any world and land on its surface. When used as a planetarium, Celestia shows accurate positions of solar system objects in the sky. You can switch labels and other supporting features on and off with hotkeys, or zoom in and out on an object of interest, for example Jupiter’s system of moons.

Expandable Content | Customize Celestia according to your needs.

Celestia’s catalogues can be easily expanded. There are many different add-ons available containing new objects like comets or stars, high-resolution textures of Earth and other well mapped solar system bodies, as well as 3D models for asteroids and spacecraft on precise trajectories. Even fictional objects from well-known sci-fi franchises can be found.

Ratings and reviews

This game is amazing. Although I have noticed that sometimes if you look at planets through photography mode, part of the planet turns black, and going to a star (or any large object) afterwards makes it really jittery. Also rarely the black texture stays after looking through photography mode and going to the planet.

wow this game is so cool no ads cool add-ons to anyone who likes space this is for them 100% but for some of the Addons you need celestia + which cost money but I don't mind this is a must play it's simple great quality if you are interested in space or cosmos play this!

this game is great! especially for being free! and people say they couldn't find planets and it was because the name of the planet must have capital letter at first like 'Earth' not 'earth'. i was honestly surprised that how many people rated it 1 star just because of it

What’s new

1. Data update (2026-02-03)
2. Fix incorrect textures on add-ons that have the same texture names