Turning a Watch Face Into a Working Solar System
A single answer lays out the full recipe for an animated solar-system orrery on a Facer.io watch face, including per-planet orbital-period formulas.
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Planetary Motion Simulator
A canvas-based gravity simulator with solar system, Earth-Moon, Jupiter-moons, and binary-star views, adjustable speed and zoom, and triggerable space events.
Planetary Motion Simulator (Simple)
A canvas-based gravity simulator showing solar system, Earth-Moon, Jupiter-moons, and binary-star setups, with playback speed, zoom, and view controls.
Recursive Gravitational Harmonics Simulator
A canvas-based physics simulator visualizing gravitational wave and harmonic field patterns, with sliders for adjusting the underlying simulation parameters.
Why meteor dust can't clump into hour-long glowing orbs
The user pressure-tests a paper's claim that meteor dust forms a glowing, hour-long floating orb, using quantitative physics, and the paper's author weighs in.