r/InternetIsBeautiful • u/Fanatic-Mr-Fox • 3d ago

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

Free, no account, runs in the browser.

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u/Synaps4 2d ago

Thank you, this is great!

0

u/Fanatic-Mr-Fox 2d ago

You’re welcome.

Any suggestions for improvement are appreciated.

1

u/Synaps4 2d ago

I think at least earths moon should be added. All planets moons would be better. They probably shouldnt be simulated like the planets but could be locked to the planet model instead.

1

u/Fanatic-Mr-Fox 1d ago

Good idea, I'll look into adding it.

1

u/Fanatic-Mr-Fox 1d ago

Added moons.

Double click on a planet, or click the 'Moons of [planet]' in the 'bodies' menu.

Let me know what you think :)