A black hole as light as a truck should vanish in an instant. Yet a new theoretical study suggests dark matter could let one form and grow inside a star, slowly transmuting it into a black hole — and the survival of ancient pulsars and white dwarfs helps pin down what dark matter is.
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![Pinterest](https://pinterest.com/pin/create/button/?url=https://skycr.org/2026/09/05/dark-matter-black-hole-inside-star/&media=https://skycr.org/wp-content/uploads/2026/09/blackhole.jpg&description=A black hole weighing as little as 40 tonnes — the mass of a loaded truck — should evaporate almost instantly. But a new study in Physical Review D argues that captured dark matter could let such a tiny "endoparasitic" black hole survive and grow inside a neutron star or white dwarf, turning old stars into natural dark matter detectors.){kind=link}