gravity.js - Beta
Gravity WebGL experiment in the Solar System
gravity.js - Beta launched on July 20, 2016 with 112 votes, #337 of 3,671 launches that month and more than 75% of that year's launches. The site was not reachable when checked in September 2026.
In plain words
Gravity.js is a WebGL experiment that simulates the Solar System, allowing users to visualize gravitational interactions between planets and celestial bodies. Launched as a web-based application, it lets viewers explore orbital mechanics and planetary motion in an interactive environment. The project is designed for anyone interested in astronomy, physics, or interactive visualizations, and serves as both an educational tool and an entertaining exploration of space dynamics.
written from the facts on this page · September 2026
Does a similar job
all alternatives →- IBI built a gravity simulator in pure CSS2022 · multiplanetary.website · ▲64
- GIGravity – Interactive solar-system simulator, from Newton to EinsteinJun 2026 · qunabu.github.io · ▲217
Just for fun and self education, I've built this over a weekend to teach myself why orbits exist, not just show planets going around. Something that was never clearly explain to me in school. It opens with a guided tour that builds the idea up step by step: two bodies and the equal/opposite force, inertia (the Sun is removed and Earth just drifts straight), then "an orbit is falling and continuously missing," cosmic velocities with a little rocket, Voyager 1 & 2's real gravity assists (the clock runs the actual 1977–1989 dates so the planets orbit into their grand-tour alignment and the…
Gravity WebGL2016 · valentinvichnal.github.io · ▲84A gravity simulator, with updated movement controls
Atlas of Space2025 · atlasof.space · ▲770Hello HN! Sharing a recent side project of mine, the Atlas of Space, that I built out to explore the Solar System. As a long-time space nerd, I realized recently that I didn't have a good intuition on the scale, speed, and relative orientation of the celestial bodies around us. So over the break I built out a kind of spatial Wikipedia to click around and learn about planets, moons, asteroids, and other bodies orbiting the Sun. The physics is all simulated in the browser using simple Newtonian mechanics. There's a lot left to do from here, including modeling objects in non-Keplerian orbits…
Black-hole.js – Visualize black hole gravitational lensing in WebGL2015 · github.com · ▲72Renders black hole gravitational lensing effects in an image canvas using WebGL, glfx.js, and numeric.js - cliffcrosland/black-hole.js
The whole Solar System and every tracked satellite, live in the browser22d ago · space.bl2.net · ▲407
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