Galaxy Formation cover image
Galaxy Formation icon

Galaxy Formation

App depicting how stars, planets and galaxies are formed from dark matter.

Choitek · cmu.physics.galaxy

0.0 10,000 10,000 v1.6 45.5 MB SDK 22+ PEGI-3 · Everyone

Galaxy Formation screenshot 1 Galaxy Formation screenshot 2 Galaxy Formation screenshot 3 Galaxy Formation screenshot 4
UpdatedJan 26, 2026
PublishedDec 2, 2020
Packagecmu.physics.galaxy
MD53422985efb45b61312e8295441c5187c
SHA1 (signer)BE:AF:59:E4:62:F2:DB:A3:24:01:33:05:74:A6:37:E2:9C:DD:18:3B
Signed byCN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
Architecturesarmeabi-v7a, arm64-v8a
Malware scanTRUSTED
Websitehttps://github.com/johnchoi313/Galaxy-Formation-WebGL
Contact[email protected]
Privacy policyView

Description

SUMMARY

Galaxy Formation is a multi-platform educational app depicting how dark matter particles in the universe clump together over billions of years to form things like stars, planets and galaxies. The app does this with a lite, real-time simulation of thousands of n-body particles that are attracted by gravitational forces that form galaxies when combined.

You can try out the live WebGL Browser version here:
WebGL: https://johnchoi313.github.io/Galaxy-Formation-WebGL/

For better performance, you can download the native versions for each platform here:

Android: https://github.com/johnchoi313/Galaxy-Formation-WebGL/blob/master/Other%20Platforms/Android.zip
Mac: https://github.com/johnchoi313/Galaxy-Formation-WebGL/blob/master/Other%20Platforms/Mac.zip
Windows: https://github.com/johnchoi313/Galaxy-Formation-WebGL/blob/master/Other%20Platforms/Windows.zip
Linux: https://github.com/johnchoi313/Galaxy-Formation-WebGL/blob/master/Other%20Platforms/Linux.zip
WebGL: https://github.com/johnchoi313/Galaxy-Formation-WebGL/blob/master/Other%20Platforms/WebGL.zip

Get the full Galaxy Formation PDF documentation here:
PDF: https://github.com/johnchoi313/Galaxy-Formation-WebGL/blob/master/Documentation/Galaxy-Formation-Documentation.pdf

Find more screenshots here:
Images: https://github.com/johnchoi313/Galaxy-Formation-WebGL/blob/master/Images

And check out a full video playthrough here:
Video: https://youtu.be/eDyD2gc5nng

CREDITS:

Lead Developer: John Choi.
Learn more about me here: https://www.johnchoi313.com/

Inspired by Volker Springel's Gadget Simulation Code.
Learn more about Gadget here: https://wwwmpa.mpa-garching.mpg.de/gadget/

Contributors
Doyee Byun
Luka Jelenak
Patrick LaChance
Peter Lee
Raphael Segal
Ruihao Ye
Rupert Croft

Additional Resources
3D Black Hole Shader - Mikołaj Bystrzyński
Lite FPS Counter - OmniSAR Technologies
Lunar Mobile Console – SpaceMadness
FastMobileBloom – becomealittlegirl
Simple LUT Adjuster - Jeff Johnson
Float Music - Emily A. Sprague
Spacescape - Alex Peterson
UI Gradient – azixMcAze

Made possible with generous support from the National Science Foundation.

Required features

Permissions (3)

Galaxy Formation requests the following Android permissions:

Tags

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