A Spacetime Interface Hypothesis of Planetary and Stellar Bodies: Energy Availability via Interaction Density Control

This manuscript presents a hypothesis-driven framework that interprets planetary and stellar bodies as natural interfaces organizing interactions within spacetime, rather than as energy-generating objects. Focusing on energy availability, it reinterprets gravity and time dilation as outcomes of interaction density. The work maintains conceptual consistency with existing physical theories while proposing a theoretical framework for energy organization and spacetime interfaces. This document is released as a preliminary conceptual study without claims of experimental validation. [email protected]