Primordial black holes are one explanation for dark matter, although it's not widely accepted. These black holes would have formed at the beginning of the Universe and would be at least the mass of a medium-sized asteroid. These black holes may have fallen into the stars if they are out there. These low-mass black holes would emit Hawking radiation, contributing to the star's radiation pressure. Is there a way we could know if there's a black hole inside the Sun?