A new study published in the journal Physical Review D suggests that black holes as light as 40 metric tons could exist inside stars, provided they receive mass from dark matter. The research, led by H. A. Adarsha and others, examines how black holes that formed in the early universe might typically vanish over time through a quantum process called Hawking radiation, first proposed by physicist Stephen Hawking in 1974. However, the study suggests that black holes that form later inside dense stars, such as neutron stars and white dwarfs, might avoid complete evaporation if they gain mass from dark matter and the surrounding stellar material. The research highlights that dark matter, a mysterious form of matter that does not emit light and interacts weakly with ordinary matter, can accumulate in the core of a star. Over time, this accumulated dark matter may collapse into a tiny black hole. Once formed, the growth of this black hole depends on a balance between the material it absorbs and the mass it loses through Hawking radiation. The study calculates a critical mass threshold: below this, Hawking evaporation dominates, but above it, the black hole can grow. In regions with a high concentration of dark matter, like the dense core of the Milky Way, this critical mass could be as low as 40 metric tons. According to the findings, if the mass supplied to a black hole from dark matter and surrounding stellar matter exceeds the mass lost through Hawking radiation, even a very small black hole can continue to grow. Over time, it could eventually consume its host star and transform it into a black hole. This process could explain the existence of small black holes that might otherwise be too light to survive the evaporation process. The study also notes that the long-term survival of certain types of stars, like millisecond pulsars and white dwarfs, which have existed for billions of years, places limits on the mass of ultraheavy dark matter particles and how strongly they interact with normal matter. These findings contribute to our understanding of dark matter and the behavior of black holes in extreme environments. The research has been published in Physical Review D and is available on the arXiv preprint server.