Sun vs Quasi-Star: The Absolute Largest Star Ever

#shorts Sun vs Quasi-Star: The Absolute Largest Star Ever 2021 A quasi-star (also called black hole star) is a hypothetical type of extremely massive and luminous star that may have existed early in the history of the Universe. Such a star would have to be at least 1,000 solar masses (2.0 × 10^33 kg) Quasi-stars are predicted to have surface temperatures higher than 10,000 K (9,700 °C). At these temperatures, and with radii of approximately 10 billion kilometers (67 au), or 14,000 times that of the Sun, each one would be about as luminous as a small galaxy. Stephenson 2-18 Radius ~2,150 × Sun radius ( billion km, 928 million mi) Distance from the sun ~19,560 Light years Luminosity ~440,000 × Sun Luminosity Surface temperature ~2,900 °C (5,252 °F) Mass unknown Sun Radius 695,700 km (432,287 mi) Surface temperature ~5,500 °C (9,400 °F) Luminosity × 10 ^ 26 watts Mass × 10 ^ 30 kg ( × 10 ^ 30 lbs)