Negative Mass: The New Era of Theoretical Physics and Its Role in Explaining the Universe

This declaration introduces a revolutionary theoretical framework in which negative mass is not merely a mathematical concept but a fundamental constituent of the universe. Negative mass interacts with positive mass, black holes, and white holes, producing dynamics that can naturally explain cosmic acceleration, galaxy stability, and phenomena traditionally attributed to dark energy. This work proposes a general law describing interactions between positive and negative mass and outlines testable predictions that can guide future observational and experimental physics.