Solar System Gravity Well Sandbox

Drop stars or rogue planets, launch colorful test masses with planet-scale presets, and explore graceful (or chaotic) orbits. Drag to pan, mousewheel to zoom, and tap a particle to inspect its energy inside the well.

Interaction Mode

Left click interacts, while right click (or holding the spacebar) lets you pan across the sandbox.

Click anywhere to drop a gravity source.

Massive Bodies

Use the slider to drop anything from dwarf planets to star-like wells.

Test Particles

Choose a preset similar to real planets, then click once to mark a launch point and once more to set the initial velocity vector.

Simulation

Scene

Ready
Energy inspector ParticleNone Speed– Kinetic– Potential– Total–

Tap any particle in the scene to sample its energy.