robotrocketscience
Orbital toys, ASCII rockets, and LLM memory research. Hit LAUNCH for liftoff — and yes, there's a whole shell in there.
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SUN-EARTH-MOON SYSTEM VISUALIZER
Why is it always the same face of the Moon we see, and how can the Sun and Moon share the sky? An interactive explainer built on the rolling-coin analogy: unlock the tidally-locked Moon, watch real phases, and see an observer's sky where both bodies clear the horizon. Geometry is faithful; distances are not to scale.
SOLAR SYSTEM
Where is Saturn right now? This renderer uses real NASA orbital data to show you exactly what the solar system looks like today, or any day going back to 1996. Pick a birthday, scrub through 29 years of planetary motion, or just watch Jupiter do its thing.
SATURN V ASCII LAUNCH
I wanted a cool rocket launch playing every time I opened my terminal. That turned into a full truecolor ASCII video engine. The Apollo 11 liftoff, rendered character by character, with flickering flames and smoke that actually dissipates. See the GitHub repo for install instructions.
PERSISTENT MEMORY FOR LLM AGENTS
LLM agents forget everything between sessions. This system detects corrections without LLM calls (92%), bridges vocabulary gaps in retrieval (99.5% recovery), and tracks confidence with Bayesian scoring. No embeddings, 98 experiments, benchmarks re-run in public. Now at v4.0 with 6,009 tests.
DIFFERENTIABLE ROCKET SCIENCE
My failed 2021 course project, rebuilt: a neural net learns spacecraft maneuvers by backpropagating through the physics itself. 92.3% success at 1.03x the optimal fuel, one rediscovered operational maneuver, one ballistic lunar capture with no capture burn. The original failure is kept in the repo.
MINING SATURN'S RINGS
The vehicle captures a chunk of water ice in Saturn's B ring and uses the chunk as propellant on the return leg. 215 pre-registered analysis rounds tested the concept and falsified it. The commercial mission does not satisfy the closure conditions. The one corridor that remains is an existence proof only. The campaign kept the complete record.