Gravity as a ‘Resource-Saver’: Physicist Proposes Universe is a Computational Simulation
The fundamental nature of reality may be less about classical physics and more about computational efficiency. A provocative new theory suggests that gravity—one of the most mysterious forces in the cosmos—could actually be a clue that our universe operates as a sophisticated information system.
According to Melvin Vopson, a physicist at the University of Portsmouth, reality might obey laws of information in addition to the classical laws of physics. Vopson posits that gravity may not be a traditional force, but rather a directive designed to allow the system running the “simulation of everything” to conserve computational resources.
This hypothesis aligns with the broader simulation theory, which suggests the universe is a digital construct. While the idea remains speculative and currently lacks a definitive framework to distinguish between a simulated and a “real” universe, the intersection of information theory and physics is providing new avenues for exploration. This shift in perspective highlights how the digital economy’s concepts of optimization and resource management are beginning to influence the most fundamental questions of cosmology.
Simulating the Cosmos: The ExaSky Project
While the theory of a simulated universe remains a hypothesis, the actual technology to model the cosmos is advancing rapidly. A global team of scientists has recently achieved a milestone with the ExaSky project, which has successfully recreated a massive portion of the universe within a supercomputer.
The project leverages Frontier, one of the most powerful computing systems ever built, located at the Oak Ridge National Laboratory in the United States. By utilizing Frontier’s immense processing power, researchers simulated a cosmic volume exceeding 31 billion cubic megaparsecs—a significant fraction of the observable universe.
Unlike a simple visual animation, ExaSky is a rigorous physical model that evolves based on real equations. The simulation is specifically designed to analyze the interplay between visible and invisible components of the universe, focusing heavily on dark matter. As dark matter’s gravity dictates the cosmic architecture—acting as the scaffold where gas accumulates, stars are born and galaxies form—understanding its behavior is key to explaining the current shape of the universe.
The ExaSky model pushes beyond traditional simulations by incorporating cosmological hydrodynamics. This allows scientists to track the movement of hot gas, galactic evolution, star formation, and the long-term influence of supermassive black holes over billions of simulated years.
The ability to mirror the dynamics of the cosmos with such precision underscores the growing power of high-performance computing. As these models become more complex, they provide a practical benchmark for theorists like Vopson, who seek to determine if the laws of nature are, lines of code.
