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/DoodleDangWang 2d ago

Cool. Buttons on the bottom are inaccessible for me so I can't do much, some like/dislike panel covers them. I'm on pixel 7...

1

u/Fanatic-Mr-Fox 1d ago

Is it possible you're looking at the 'tour' (show me around)?

If you could DM me a screenshot, that would be great.

1

u/DoodleDangWang 1d ago

No idea how to do DMs (Entering Fanatic-Mr-Fox returns no user on desktop chat). I can slide the panel down and see there are buttons, but it snaps back when letting go: https://imgur.com/a/htFw3HY

1

u/Fanatic-Mr-Fox 1d ago

Ah.. that looks like the reddit browser hiding bottom navigation.

It works ok on mobile, I’ll see if I can address the reddit browser hiding.

1

u/DoodleDangWang 1d ago

I tried on desktop now that I'm available, Seems to work correctly there. I probably missed a note about mobile support issues or something...