Galactic Gravitational Life-Belt Theory (GGLB): A Physical Framework Linking the Position of a Star Inside the Galactic Gravitational Well to the Possibility of Biological Life Emergence and Persistence

This work presents the Galactic Gravitational Life-Belt Theory (GGLB), a falsifiable astrophysical hypothesis proposing that biological habitability begins at the galactic scale rather than solely at the planetary scale. The theory suggests that a star’s long-term position and orbital history within the galactic gravitational well influence the probability of forming and maintaining stable planetary systems capable of supporting life. A hierarchical framework is introduced in which galactic habitability precedes stellar, orbital, and planetary habitability. The paper develops the theoretical framework, defines observable quantities, proposes testable predictions, and establishes explicit falsification criteria. No observational confirmation is claimed; the work is presented as a hypothesis intended for future observational testing.