Tracking Mars’ Orbit to Detect Dark Matter

In a new study, MIT physicists suggest that if most dark matter consists of tiny primordial black holes, as first proposed in the 1970s, these black holes should pass through our solar system about once every ten years. According to the researchers, such a flyby would cause a slight wobble in Mars’ orbit, which current technology could measure. Detecting this wobble would support the idea that primordial black holes are a significant source of dark matter in the universe.