A theoretical model shows that an extra spatial dimension can explain cosmic expansion and galaxy rotation without invisible dark matter particles. Astronomers commonly assume that unseen subatomic particles provide the missing mass that holds spinning galaxies together. Instead, wrapping a fifth dimension into a tiny circle creates a scalar field that modifies gravitational attraction across astronomical distances.
Astrophysics & Cosmology
Matter, energy, planets, stars, and the physical rules that hold them together.
Standard cosmology relies on unseen dark matter and dark energy to explain how galaxies spin and why the universe expands at an accelerating rate. Physicists long assumed that the fabric of space must have symmetric geometry with zero internal twist. Removing that geometric restriction allows space to twist, generating mathematical terms that account for cosmic acceleration and galaxy motion without adding mysterious substances.