Planetary Analogs is a research project on the environments where “other worlds” are built on Earth. It investigates analogue sites as experimental infrastructures—spaces in which planetary conditions are not only represented, but materially staged, measured, and made actionable through design, logistics, and technoscientific practice. Working at the intersection of architectural and environmental history with STS and histories of science and technology, the project asks how analog environments produce knowledge: how variables are isolated, exposure is managed, and sensing and simulation translate complex planetary processes into protocols, metrics, and scenarios. It traces how these sites stabilize particular ideas of habitability, risk, and readiness, and how their results circulate as portable models across institutions and media. At the same time, Planetary Analogs frames analog sites as laboratories of dis:connectivity—spaces that promise controlled futures by selectively disconnecting conditions, while redistributing labor, vulnerability, and environmental burden across uneven terrains of power and responsibility.