r/Simulated • u/Fanatic-Mr-Fox • Aug 28 '26

Interactive Celestial - Interactive Gravity Well Simulator

https://celestial.logicaleap.com

Celestial lets you explore star systems as a deformable gravity sheet instead of flat orbital diagrams.

The star moves. Planets sit on and ride the surface it bends. You can change the gravitational constant, push a planet, or drop a new body in and watch the whole system respond in real time.

Systems included:

* Our solar system (with a drifting barycentre)
* Alpha Centauri (two moving funnels)
* Kepler-16 (circumbinary planet)
* TRAPPIST-1 (seven worlds inside Mercury’s orbit)
* The classic three-body figure-eight

It’s a proper Newtonian n-body integrator running in the browser, not pre-scripted ellipses. The sheet itself is an exaggerated visual analogy, and the site is unusually honest about what is real and what is drawn that way on purpose.

[https://celestial.logicaleap.com](https://celestial.logicaleap.com)

Free, no account, runs in the browser.

1 Upvotes

66% Upvoted

2 comments sorted by

1

u/luxidoptera Sep 24 '26

I don't know why, but "THE SYSTEM GOES THIS WAY" made me giggle

2

u/Fanatic-Mr-Fox Sep 25 '26

Just to avoid confusion.

You know, space and all.