How Quantum Gravity Theory Could Fix the Universe Without Dark Matter

Stars at the edge of the Milky Way orbit at breakneck speeds. If you calculate the gravity provided by visible matter alone, these stars should fly off into the void. Physics has a standard fix for this: dark matter. We assume there is invisible mass holding everything together. But a new study proposes a different solution. It suggests that our current understanding of gravity just needs a specific mathematical tweak, offering a fresh perspective on Quantum Gravity Theory.

The researchers introduce a 'logarithmic term' to the gravitational equation. This is a mathematical modification that changes how gravity behaves depending on distance. The results are striking. If you look at the microscopic scale inside a black hole, this term creates a repulsive force. This prevents the black hole from collapsing into a singularity—a point of infinite density where physics breaks down. The maths keeps the information safe.

Testing the Quantum Gravity Theory

Does this hold up in the real world? The study compared this modified gravity against actual observations. The team analysed the 'shadows' of supermassive black holes like Sagittarius A* and M87*. They also mapped the rotation speeds of galaxies, including the Milky Way and Andromeda.

The paper measured a high degree of consistency between the derived formula and the observational data. It suggests that by adding this logarithmic correction, gravity naturally provides the extra pull needed to keep galaxies intact. If this framework proves correct, we may not need dark matter hypotheses or complex parameters to explain why the universe moves the way it does. Instead, a single unified description could govern everything from the smallest particle to the largest galaxy.