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 on any day from 2001 to 2031. 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. I built aelfrice: it detects corrections without LLM calls (92%), bridges vocabulary gaps in retrieval (99.5% recovery), and tracks confidence with Bayesian scoring. No embeddings, and benchmarks re-run in public. Now at v4.0.
DIFFERENTIABLE ROCKET SCIENCE
My failed 2021 course project, rebuilt: a neural net learns spacecraft maneuvers by backpropagating through the physics itself. 92.3% success on the 3-D circularization task, and 1.03x the optimal fuel at the best-fuel checkpoint. One rediscovered operational maneuver, one ballistic lunar capture with no capture burn. The original failure is kept in the repo.
MINING SATURN'S RINGS
Trawl a block of water ice out of Saturn's B ring and drink it on the way home -- the cargo is the propellant tank. 215 pre-registered analysis rounds tried to kill the concept, and finally did: the commercial mission doesn't close, the one surviving corridor is an existence proof, and the campaign kept the receipts.