Just One More Dimension and Dark Matter Is Solved

String theory proponents claim a new testable prediction involving "dark dimensions" to explain dark matter and dark energy. This hypothesis suggests that while most extra dimensions are microscopic, one might exist at the micrometer scale, allowing gravity—but not standard model particles—to enter it. This would manifest as massive gravitons acting as dark matter and cause detectable deviations from Newton’s inverse-square law at distances below 10 micrometers. Current experiments have ruled out deviations down to 30 micrometers, and recent cosmological data from the Planck satellite remains inconclusive. However, these claims likely represent "institutionalized pseudoscience" rather than a theoretical breakthrough. The "dark dimension" is a conjecture rather than a direct derivation of string theory, following a repetitive pattern in physics where "testable" predictions are perpetually shifted just beyond the reach of current experimental limits to maintain funding and media relevance.