The authors of the work, published in the Monthly Notices of the Royal Astronomical Society, have proposed a new approach to detecting primordial black holes. They believe that the moon can act as a detector.
Scientists have explained that black holes weighing between 1019 and 1022 grams could be numerous enough to collide with the Moon sometime in the history of the solar system. The authors showed that the profiles of impact craters with such holes differ from traditional craters and can be detected using high-resolution images of the lunar surface.
Researchers have focused on the moon only because it is well studied. However, the same principles can be applied to other rocky objects without an atmosphere in our solar system.