Through my research, I have unearthed a significant discrepancy in Einstein's Mass-Energy Equivalence principle, which is a fundamental cornerstone of his special theory of relativity. I have put forth a more sophisticated explanation regarding the manner in which a minute quantity of matter can yield an immense amount of energy. My research posits that the 'missing' matter in a nuclear reaction—or any event characterized by a mass defect, such as supernovae, neutron star collisions, or black hole mergers—undergoes transformation into an ultra-fine, super-thin form of matter. This conversion, which I term 'detonation', of the 'missing' mass is the underlying mechanism that accounts for the energy release associated with a mass defect. This revelation suggests that space is saturated with this ultra-fine matter. The implications of this discovery have the potential to radically redefine our comprehension of the universe. It could furnish novel insights into a plethora of cosmic phenomena that are currently interpreted through the lens of the theory of relativity. Being a state of matter, this ultra-fine form is influenced by gravity, resulting in areas of higher density surrounding massive celestial bodies. As light traverses these denser regions, it experiences refraction and bending. This phenomenon could offer an explanation for observations such as the bending of starlight and gravitational lensing. Furthermore, the density of these regions may have an effect on the frequency of particle vibrations, which could shed light on gravitational time dilation. The presence of this matter in space could clarify concepts like Lorentz contraction, the increased mass of an object in motion, the universal speed limit, among others. Acknowledging that space is imbued with this particular form of matter heralds a groundbreaking perspective on the universe and paves the way for a new epoch of exploration into its intricacies. In addition, the realization that this 'missing' matter undergoes a 'detonation' to release energy as a result of a mass defect could be a catalyst for the advancement of cutting-edge energy and propulsion technologies. Alongside these findings, I have developed a novel atomic theory, founded on the premise that space is suffused with an exceptionally fine form of matter, and an innovative theory of light. At present, I am assiduously preparing my research for submission to a scientific journal for peer review.