Featured Article
Measuring Infinity
How much of pi do you really need before a circle stops getting meaningfully more accurate? This article walks through a simple diameter example, then shows how quickly the error shrinks as more digits are added.
Science
Measure what we can. Define what we cannot.
Science here is an invitation to look closely at measurement, approximation, uncertainty, and the words we use when precision matters.
This section will grow through short articles that explain a specific idea clearly, show how the numbers work, and leave room for honest limits.
New Article
One Set of Atoms, Several Jobs
Can water, oxygen, electrical energy, and crew carbon dioxide be treated as one circulating spacecraft resource system? A preliminary four-person, 180-day mass-and-energy model.
New Article
Recovery-First Trash-and-Water Thermochemical Hybrid Vehicle
A preliminary engineering study of a recovery-first vehicle that separates useful materials from mixed waste, recovers process water, gasifies the remaining combustible fraction, and uses producer gas in a pilot-diesel hybrid drivetrain.
New Article
The Mars Ark
A detailed Mars-settlement engineering architecture covering artificial gravity, water-centered life support, freshwater ecology, reusable Mars shuttles, Martian ISRU, surface power, industrial predeployment, and two ten-year growth scenarios.