The Space Time Card is designed to operate within contemporary lunar interoperability efforts such as the NASA LunaNet and ESA’s Moonlight frameworks and related international navigation initiatives. Rather than competing with future lunar navigation services, The Space Time Card provides a practical near term bridge. It enables missions to operate autonomously today while remaining compatible with shared infrastructure as it emerges, and it retains long term value as a resilience and holdover layer even once external services mature.

Between the Craters was developed by Open Lunar contributors for Dark Matter Labs as part of the Planetary Compendium — a global research initiative exploring governance challenges beyond Earth.

This operations guide explores real-world scenarios at high-interest lunar sites, applying a novel three-ring safety area framework with a special focus on nuclear FSP integration. It offers actionable tools and policy insights for safe, collaborative exploration and resource management.