Dark Stars: Cradle of Giant Black Holes ⚡ экспресс
Dark stars are hypothetical objects of the early universe, powered by dark matter annihilation. Unlike ordinary stars, they can grow by accretion up to 10^4–10^7 solar masses, avoiding disruption from nuclear processes. When the mass becomes critical, relativistic instability kicks in, and the star collapses into a black hole. This scenario turned out to be remarkably robust to details—it doesn't depend on the initial mass, birth time, or accretion history. The resulting black holes serve as seeds for supermassive giants (over 10^9 M⊙) observed in the early universe.
Right after the Big Bang, unusual luminaries could be born — dark stars. Unlike the Sun, they didn’t burn nuclear fuel but fed on collisions of dark matter particles, which release energy. Like a snowball rolling downhill, such a star rapidly sucked in gas, gaining up to millions of solar masses. Its own gravity created enormous spacetime curvature, and the star collapsed into a black hole. This scenario was predicted by Subrahmanyan Chandrasekhar and Richard Feynman: no internal pressure can stop such a collapse. This is likely how the seeds of supermassive black holes, which we see in the centers of galaxies, formed. Without dark stars, ordinary stars wouldn’t have had enough time to grow these giants in the young Universe. Amazing fact: a million-solar-mass dark star would stretch out to Pluto’s orbit, yet its surface would be colder than an incandescent light bulb.
🎯 A giant dark star would span the distance from the Sun to Pluto, yet its surface would give off less heat than a household light bulb — a stunning contrast between size and temperature.